Advanced Biology (closed for Yerad)

[xFuckDollx]

http://i1150.photobucket.com/albums/o619/xFDollx/d1d3tumblr_mgbv81ApdY1rzv845o1_500_zps9sa1fkwr.jpg
Ariel Masters

The description of Professor Valentine's Advanced Biology class had sounded exciting enough, but two months into the semester and Ariel was wishing she had chosen another class, any class. But then, last week, they had moved into a new subject, Sex and Reproduction. When Professor Valentine had first mentioned the subject, Ariel had assumed they would be watching videos of Rhinos humping one another or staring endlessly through microscopes to study the reproduction of single celled organisms. She could not have been more wrong.

Sure, there had been a few lectures involving sex and reproduction in the animal kingdom, but then they had quickly transitioned into a discussion of human sex and reproduction...a topic that was infinitely more interesting to the twenty one year old college student. And when Professor Valentine had asked the students to choose a topic for their final term paper, Ariel had been quick to choose the most controversial topic, The Role and Effect of Pornography in Modern Human Intercourse and Reproduction.

Now, two days later, the young woman was experiencing a completely different form of frustration with her Advanced Biology class. While Ariel had always been sexually adventurous and more than a little, shall we say, enthusiastic, she'd never really payed much attention to porn. She didn't have a problem with it, she just never really had a use for it. But, considering the topic of her term paper, she felt like she needed to do some research. And holy shit! Who knew so much porn was available at a person's fingertips? Or how addictive it could be?

Ariel had started researching on Friday night just after having dinner with her family. Now it was eight o'clock in the morning and she hadn't slept a wink. Ten straight hours of porn, broken only long enough for a couple of bathroom breaks, and a trip to the kitchen for a snack. She couldn't take it anymore. She needed a release. Ariel considered calling one of her ex-boyfriends that she occasionally still hooked up with, but considering it was 8:00 am and he worked late nights as a bartender, she doubted he would pick up.

A nice, long, hot shower. That was what she needed. A little time alone in the shower, just her and her fingers and the images in her head. Ten hours worth of images...Ariel's parents had left the house a few minutes ago and wouldn't be back for hours, so she didn't have to worry about them. Her younger brother was home, but as long as she didn't get too carried away, she wouldn't have to worry about him knowing what she was up to in the shower.

Her younger brother...as the twenty one year old slipped out of bed and out of the clothes she wore, she found herself thinking about him. Did he look at porn on his computer? Somehow she doubted it. Not her innocent little brother. Not that he was that little anymore. He was going to graduate from high school this year.

Sleep deprived and hornier than she'd been in a long time, Ariel wrapped a towel around her naked body and stepped into the hallway. She was heading to the bathroom, or at least she had intended to go to the bathroom, but for some reason she ended up in front of her brother's bedroom door, her hand reaching for the doorknob, wondering if he was still asleep.

 

[Yerad]

The first thing Kane did as he woke that Saturday morning was to retrieve the magazine from under his pillow. It wasn't just a naughty magazine it was a 'dirty' magazine. Most pages showed two women doing more than just looking beautiful. They seemed to lick each other, suck on each others nipples and to tease each other with a big toy.... not the same girls but all beautiful with full breasts. Kane loved breasts, not that he had ever touched any for real.

He didn't think of himself as bad looking, but he just was very shy around women. In his fantasy and dreams he was a lot less shy and he had imagined fucking all of his sister's friends... and some times even herself. Other times he hardened as the thong of one of his classmates was slightly visible.... a friend had said that a girl wearing a thong wanted to get fucked in the ass... but the only action he got was his own hand.

He was 18 years but never had a girlfriend and so far it didn't look like that would ever change. So he enjoyed his magazines or watched naughty movies on the computer. Lesbian sex was the latest of his interests and he wondered if his sister had ever been naughty with one of her girlfriends.

The thought was hot and he was about to once again jerk his cock to an orgasm when a sudden sound startled him. He tried to hide the magazine again but in his rush it fell on the ground, opened to a page where a black haired girl laying on the beach had her legs spread so a redhead could taste her wetness...

 

[xFuckDollx]

"Hey, little brother, are you awake yet?" Ariel asked as she pushed his bedroom door open and stepped half way through the door way. She had noticed light from beneath his door and heard some rustling, so she was pretty sure Kane was awake, and sure enough as she turned and looked toward the bed she saw that he was sitting up.

Based on the look on his face and the fact that he dropped something to the ground, the teenager appeared to be startled by his sister's sudden appearance. Should have knocked, Ariel thought to herself as she stepped fully into her little brother's room, clutching the fluffy, white towel to her chest.

"Sorry, didn't mean to just barge in..." the brunette's voice trailed off as her eyes caught sight of the magazine that Kane had dropped to the floor as she entered. The 2-page spread showed a sunny beach with two completely naked girls, one with her head between the other girl's thighs.

I guess that answers the question of whether my little brother looks at porn, Ariel realized with a slight smirk. And apparently, he likes a little girl on girl action, she noted.

"I was just going to take a shower, but I thought I would make sure you didn't need to use the bathroom first," the brunette explained, her gaze finally lifting from the dirty magazine up to Kane's face. "But...it looks like you are busy..."

Okay, Ariel, leave your brother alone and let him masturbate, while you go take a shower and...well...masturbate. That was what Ariel told herself to do, but instead of turning and heading out of Kane's room, the brunette stepped over to her brother's bed and slowly sat down on the side, her towel slipping slightly in the front before she managed to catch it.

With the smirk still on her face, Ariel leaned over and grabbed the magazine off the ground. Without hesitation she began to flip through the pages, which were filled with pictures of attractive, nubile young women alone or engaged in various sexual activities with other attractive, nubile young women.

"Wow, bro, that's a lot of muff diving," Ariel concluded before tossing the magazine into Kane's lap. "I take it that turns you on?"

 

[Yerad]

With the startle of the magazine falling to the floor and his sister walking into his room, it actually took a moment before Kane realized the 'way' she entered his room... wearing nothing but a towel. At least it looked that way. His eyes tried to find out if his thought was right, his cock craved his hand while his mind wanted to plead with Ariel not to tell their parents.

As his sister leaned to take the magazine from the floor, Kane made no effort to hide the way his eyes peeked at her breasts and the sight she offered him. She really was beautiful... he knew he wasn't the only guy to think so, and he had never seen her 'dressed' like this. He couldn't help it but his hand went to his cock and the first stroke was a fact. The gasp that left his mouth was both from the sight, her words and his own touch.

As she tossed the magazine on his lap, it became awkwardly obvious where his hand was and Kane had a hard time deciding if his sister was serious or just making fun of him. He gave her a weak nod. "Please... don't tell..." He whispered, not releasing his cock just yet and quite aware that it wouldn't be the girls in the magazine he would be jerking to when she left his room.

 

[xFuckDollx]

As the magazine landed on Kane's lap, Ariel finally noticed where her brother's hand was and what he had been doing. She also noticed the pained expression on his face as he pleaded with her not to tell.

"Don't worry, little brother," she assured him. "This is just between you and me. That is, only if you are willing to do me a little favor..."

If she was studying porn for her class, maybe she needed to know a male perspective. Her brother could give her that. And if she had a little fun with him in the process, well, what harm could that do...

"You see, I'm taking this Advanced Biology class, and I need to interview some people, you know, get some different viewpoints...I'm thinking you could help me out, and of course it would all be anonymous," the brunette explained, shifting slightly to more fully face Kane, and in the process, causing her towel to ride up her thigh quite a bit.

 

[Yerad]

The longer Ariel stayed in his room, the more Kane noticed about her. The scent that came from her... he didn't think it was perfume but it did affect him... as far the towel hadn't already. He also noticed the tan on her skin that seemed to go all the way to the towel and he wondered how much further it went. Had his sister a habit of tanning naked? He had never seen it but a guy could fantasize about it.

He frowned as his sister started about a 'little favour' but knew he couldn't really say no, no matter what it was. Other than the shame a guy felt when caught doing something bad, there was the simple fact that their parents weren't really open to sexuality and would most likely make it impossible to enjoy magazines or time on the computer.

The relief was clearly present on his face as he heard his sister only needed help for an interview, that didn't sound too bad. But his expression changed as he was allowed a further glance upon her thighs. His eyes lingered there for a bit and then went up again... although his gaze (again) didn't get higher than her breasts.

"How... what do you want to know?" He asked her

 

[xFuckDollx]

Ariel noticed that way her brother's eyes seemed to be taking her in, from her bare feet, up the length of her legs, and stopping at her breasts which were threatening to spill out over the top of her towel. She wondered if he was only looking at her that way because she had interrupted his little wank session, or if he had looked at her that way before and she just hadn't noticed.

"How... what do you want to know?" He asked her.

The brunette was torn. She wanted to race off to the shower and finger herself silly under the hot water, until she couldn't walk straight, but at the same time, she wanted to stay and find out as much as she could from her brother while he was willing to open up. In the end, she decided to stay, at least a little longer.

"Well, let's start with how many times a week do you jerk off?" she asked matter-of-factly. "And how many of those times do you use porn to help you get off?"

As Ariel waited for her brother's answer, she studied his face. She definitely tell that he was staring at her boobs, and from what she could tell, the bulge under his sheet hadn't subsided at all.

 

[Yerad]

Kane always tried to steal glances of his sister and most of her outfits were very rewarding for that, but as revealing as she was currently in her towel was very new. All of her friends were rather hot to the point it was hard to pick a favourite. Most of them seemed to have a clear dislike of bras, something Kane shared. But right now his sister was the hottest girl he could imagine.

He blushed as her question came and wondered about what he should answer. "Two times..." He answered, barely a whisper and the words that followed were even softer. "a day mostly..." It felt very weird to admit such to his sister, but his cock only grew harder. He glanced at the magazine that now was closed but the girl on the front might be the hottest picture: a brunette sitting on her knees on a bed, a blue toy placed against her own pussy lips, threatening to insert it.

"About half... mostly in the weekends." He answered her other question. The other times he just used his fantasy... about her and/or her friends, or the girls in his class. Or just random girls he had seen on the street or around.

 

[xFuckDollx]

Twice a day! Holy shit, my little brother can't get enough, Ariel thought, trying not to let her surprise show on her face. And at least half that time he was watching porn when he jerked off. Ariel cursed herself for not having anything to write with or write on.

"Let me just run back to my room and get my notepad and a pen," the brunette said as she stood up and started toward the door, the back of her towel dropping low enough to reveal the top of her round butt.

"Don't go anywhere, okay?" she said as she slipped out of her brother's room and raced to her own bedroom. She returned almost immediately, paper and pen in hand, her other hand doing a poor job of holding onto her towel.

"Okay, where were we?" she said, as much to herself as to Kane, as she settled back down onto the bed next to him and started jotting notes down. After a few moments she looked up at him and asked, "How old were you when you first started jerking off, and was there porn involved?"

 

[Yerad]

Kane watched with interest as Ariel left his room. The towel really was quite revealing and another rush of blood went to his cock, but breasts really were his weakness more than her thighs and ass. As she was gone he tried to figure out what was going on, but he couldn't put his finger on it. At least not in the short time that his sister was gone.

He couldn't help but lick his lips as she returned with pan and paper, the towel now hiding even less. What wouldn't he give to see even more of his sister. He swallowed as the next question came. "Two years ago... Frank... he... we... he told me about it and showed..." He said, having a very hard time admitting it. "And no, no porn... we were talking about..." He quickly shut up, not going to admit to his sister that she had been the subject of conversation as he and Frank had jerked off.

His cock was painfully hard and he was going to jerk himself hard the next time his sister left his room, no matter how soon she would return.

 

[xFuckDollx]

Frank and Kane jerked off together...Ariel was not expecting that answer at all, but now that she'd heard her little brother describe it, she couldn't get the thought out of her head. It was so erotic, picturing her younger brother and his best friend in his room, their cocks out, in their hands as they jerked them together. God! Her imagination ran wild. Did they both cum at the same time? What did they talk about? What were they thinking about while they were stroking themselves?

Licking her lips, the brunette shifted slightly on her brother's bed, crossing her legs before asking another question, "When was the last time you masturbated? Were you getting ready to jerk off when I came in your room today?"

Ariel was so preoccupied with thoughts of Kane touching himself, stroking himself, that she hadn't noticed that her towel had slipped down enough to reveal her left breast, the swollen nipple poking out above the top of the towel.

 

[Yerad]

Kane watched mesmerized at her nipple and answered her questions without really being aware of it. "Last night... and yes... I was going to." He wondered what it would feel like to touch her nipple. His hand still rested on his cock and he was so going to empty his balls when she left the room again. Then again... he really liked the view of her breast.

 

[xFuckDollx]

Ariel was rapidly jotting down all of the questions she wanted to ask, but as her brother spoke up and admitted that he had been about to masturbate just before she came in the room, she heard a...tightness in his voice. As she looked up, the brunette caught him staring at her chest. It was at that point that Ariel realized that her towel had slipped low enough that Kane could see one breast and nipple in its entirety.

And her nipple, which was already swollen and hard, grew stiffer at the thought of her little brother staring at her.

She watched him for a moment before finally reaching down and tugging the top of the towel up a little. Curious to see just what her brother would do, the brunette was careful not to pull the towel up too much, leaving most of her round, full tit exposed, including just a hint of her areolae.

"So you were using the pictures in this magazine to get you going?" Ariel asked as she reached out and grabbed the pornographic mag from Kane's lap. "I take it watching girls get it on with other girls is a turn on for you..."

Flipping through page after page of smut, Ariel eventually dropped the magazine back down and looked her brother in the eyes, "I gotta admit, those girls are pretty hot..."

 

[Yerad]

It was impossible to hide the disappointment from his face as Kane watched his sister pull up the towel again, but he smiled as he saw she did a poor job at it. He really was bad at hiding his thoughts and his sister wouldn't have any issue figuring him out.

"Yes... when I am home alone I use the computer... to watch movies or pictures, but when you or mom or dad are home I mostly read magazines..." He shared with her, the lust making him quite a bit more open than was wise. He clearly wasn't thinking with his mind at the moment.

As he watched his sister flip through the pages, he started to stroke his cock under the covers. Never before he had felt this hard and aroused. "The... there are many.. things that... arouse me... but yes... girls together..." He admitted, his voice betraying the actions of his hand. "Have you ever....?" He asked her, imagining her with her hot girlfriends.

 

[xFuckDollx]

"Have I ever...been with a girl?" Ariel said, finishing Kane's question for him. While the brunette had never dated a girl, she had hooked up with several. The real question was how much of what she'd done was she willing to reveal to her little brother.

"Well..." Ariel started to say when she noticed that one of Kane's hands was beneath the bed sheet and appeared to be moving up and down. Fuck! Is my little brother jacking off under his sheet with me in the same room? With me sitting on the bed right next to him?

Was he thinking about her being with another girl right at that moment, the brunette wondered as she struggled to remember what it was she had been about to say, "...I've...experimented, I guess you'd say. Why? Does that matter? You wouldn't want to hear about that kind of thing would you...I mean...about the times that I've been with other girls? About me kissing them...touching them...?"

 

[Yerad]

Kane closed his eyes and a soft moan escaped his lips as his sister made the image stronger. He was almost going to cum and even the fact she was in the room with him was not enough to make him stop his activity. "Yessss...." He let escape his mouth. He was picturing his sister between the legs of her blond friend.... Right now Kane couldn't even her name. Hell, it was a miracle if he still knew his own name with the way all blood rushed to his cock.

He wondered what it was to lick a girl...or to have one suck his cock. But most of all he craved to know how sex felt like.

 

[xFuckDollx]

The way Kane hissed the word 'yes', Ariel was afraid her brother was going to shoot his wad right then. Just the thought of her brother jerking his cock a foot away from her, cumming all over his hand, it was enough to make the brunette's pussy tingle with excitement. But she didn't want him to cum too fast...

"Okay, little brother, I'll tell you all about my girl on girl experiences, including the time I hooked up with Amber during spring break, but...you have to do something for me..." Ariel said, knowing that just the mention of Amber, one of her best friends and a complete hottie, would be enough to reel Kane in. "I want you to take your dick out where I can see it."

As she said it, Ariel tugged on the bed sheet, pulling it away from her brother's lap. Then with a smile she added, "And you absolutely cannot touch it or jerk it off until I'm done telling you all about it. Deal?"

 

[Yerad]

Kane nodded, highly aroused by his sister that he would do anything for her right now. He allowed her to pull the sheets away while he struggled to stop jerking himself... he had gotten close, a hint of precum already rested on the head of his cock. His hand was still wrapped around his boner.

He succeeded in letting it go for a moment, but after Ariel just had said two words of her story, his hand was around his cock again. A guy really was a victim to his own cock at times. If she wanted him to behave, she might have to do more than just tell him to behave. Hell, with the arousal he felt right now, it might require thick iron chains to prevent him to continue.

 

[xFuckDollx]

The unveiling of her brother's penis was like a revelation to Ariel. She'd hadn't seen her brother naked since he was a toddler, not even an accidental peek while he getting out of the shower, nothing. And now here he was all grown up with a cock the easily as large and impressive as any guy she'd ever been with. It was thick and long, and appeared to be as hard as steel as it sprouted up from his lap, a tiny hint of precum on the swollen head.

The brunette practically swooned right then, but managed to control herself long enough to pretend to be writing something down on her notepad. Well actually she did write something down, she wrote...Holy fucking shit! My brother is hung like a horse!

Okay, so we're really going to do this, she told herself as she looked up from her notepad, first at Kane's face, then back down to his erect manhood.

"I guess, I'll start with what happened between Amber and I on spring break. We had gone out the night before and gotten pretty wild. We decided to enter this wet t-shirt contest together. It was fun and there was actually a big prize for winning so there were a bunch of hot girls in the contest, but Amber and I turned up the heat a little, you know? We were touching each other and kissing and stuff, which we'd never done before, and I thought it was all for the show, but..." Ariel smiled as she remembered that night, but as she looked down she saw that Kane had his hand wrapped around his cock again.

"Hey, buster! I said no touching until the story is over!" the brunette snapped, reaching over and slapping at Kane's hand to try to get him to move it away from his penis. "Come on, move it away," she urged him, grabbing his wrist and pulling his hand to his side.

"I can see this is going to be difficult for you," she said smiling at him. "I've got an idea." With that Ariel slipped off the bed and went to her brother's sock drawer. She returned a moment later with two socks in her hand. Without any explanation, Ariel grabbed Jake's right hand and lifted it up until it was against the bed post. She quickly tied his wrist to the post with the sock, securing it tightly.

Then the brunette started to lean over his body to tie his left hand to the opposite post. As she did so, two things happened. First, she felt her thigh brush against her brother's hard dick, sending a shudder of excitement through her entire body. Second, the towel she was wearing came loose and her large, C-cup tits pressed unceremoniously against Kane's face. Forced to choose between tying her brother's hand up or grabbing at her towel, Ariel chose to tie his hand up first, leaving her bare breasts against his face for a few more moments before she was done and able to climb back off of him.

"There, now you should be able to keep your hands off yourself," she said as she wrapped her towel around herself again and settled back into position on his bed, facing him. "So, anyway...Amber and I didn't get back to our hotel room until like 6 in the morning. We were both drunk and exhausted. We changed out of our wet clothes and went to sleep, or at least I went to sleep. But like an hour later I wake up to find Amber with her hand down the front of my panties and her mouth on one of my tits."

As Ariel continued to talk, she watched her brother's cock swaying in front of her like a snake in front of a snake charmer. She found herself wishing she could reach out and touch it. She knew how Kane had felt...she could barely resist the urge herself.

 

[Yerad]

Kane struggled slightly as his sister started to tie him up, but not too much. He didn't want to upset her, he had accepted the deal after all, and he was aroused, and he wanted to hear her story, and he very much wanted to see her naked body. Of course all struggle ended when he felt her brush against his body and he got to see her breasts without the towel hiding them.

His jaw dropped slightly open and he had the feeling he was going to cum then and there. Part of him wanted to wrap his lips around her nipple and suck on it, maybe bite it. Another part of him was too shy and nervous to do that. Before his mind had been made up, his sister had finished restraining him and moved away again. He was very sad to see her hide her body again.

He tested the socks a bit and Ariel was right that he now kept his hands away from himself. She could do anything to him without he had any way to defend himself with his hands. He felt very aroused as he listened to her story. He had the story he was going to cum without a touch when she spoke of Amber's hand in her panties. "Oohh Ariel... Please...." He craved a touch... his own or hers.

 

[xFuckDollx]

Ariel ignored her brother's plea, and continued with her story, glancing occasionally at the throbbing cock that stood proudly in front of her.

"So of course, I started to freak out, but honestly, the way she was touching my pussy, god, it sends shivers down my spine just thinking about it. And her tongue on my nipple...and when she realized I was awake she moved her tongue to my mouth, and slipped a finger inside of me. I was so wet already that it just slid right in..."

The brunette stopped and looked over at Kane. "Are you okay? Should I stop now? Actually I think part of the problem is that you've still got those pants on and all these sheets and blankets..."

Standing up, Ariel quickly stripped all of the sheets and blankets off of the bed. Then, turning her attention to her brother, she slowly worked his pants and boxers completely off, tossing them aside and leaving him completely naked, tied to the bed, his erection standing at attention.

"There, that's better," she announced as she stood next to the bed. "Now, how are you feeling? Are you close to orgasm? Do you think if I keep going you might actually cum even if you can't touch yourself?"

 

[Yerad]

His cock seemed to grow even bigger as Ariel worked on the sheets and his pants. Never before he had felt this big and he craved to touch his cock. He knew that a single touch would be enough to have him cum harder than before. "Yes... very close... Maybe, I don't know...." He muttered in response to her.

Of course he had the occasional wet dream caused by just the images in his sleep, but awake he had never reached a climax without stroking himself to the finish line. "Please... continue... or let me stroke myself already.." He tried to turn so he could rub himself against the bed as his legs had more freedom now but the socks limited him too much. Never before he had hated socks so much.

 

[xFuckDollx]

Ariel returned to her story, describing in painstaking detail how the beautiful, blonde Amber had fingered her to orgasm, how her friend had then climbed up and sat on Ariel's face, giving Ariel her first taste of pussy. She talked about how Amber had tasted, how after they'd each cum multiple times, the two girls had scissored one another, rubbing their pussies together until they came yet again. She went on to talk about how she and Amber had brought home another girl the next night and fucked her together.

And while Kane seemed completely engrossed in the scenes she described, he didn't climax. Gobs of precum seemed to spill from the tip of his penis, and it pulsed and throbbed with desire, but otherwise, nothing. And the brunette could tell that his inability to touch himself or to reach climax was killing her little brother.

"I wonder just how far we could push you before you would cum...you know, without actually touching your dick...or having it touched..." she said out loud as she scooted a little closer and rested her hand on Kane's thigh.

"Do you think if I took this towel off and let you look at my body, that you might cum then?" Ariel asked, caressing her brother's leg with one hand while she tugged at her towel with the other, pulling until the opened and fell down to her waist.

 

[Yerad]

He was having a very hard time listening to his sister. He knew she liked guys, but to hear these stories... was quite something else. He was jealous at how much experience his sister had, while he only knew his own hand and his fantasy. "Please... just let me free..." He pleaded, and was about to say more when his sister offered him a view on her body.

He watched with great interest how she tugged at the towel and revealed her body to him. "Oh god... Ariel." He moaned and wished she would just position her hand slightly different as he studied her body. Still, her breasts were the most appealing to him. He wished he could touch them, suck on them.

His balls were burning with lust and the head of his cock looked completely purple by now.

 

[xFuckDollx]

"You like my tits, don't you?" Ariel asked as she scooted close enough that Kane would have been able to reach out and touch her chest if his hands weren't tied to the bed. She let her hand move up the length of her brother's thigh, even brushing ever so slightly against his testicle, until it was right next to the base of his cock. "I mean, I see you checking out my friends' racks all the time, and I couldn't help but notice how you were looking at my breasts when my towel slipped earlier."

"Do you think you might cum if I rubbed them for you?" she asked raising her free hand up to her chest and caressing her tits enthusiastically. "I could massage them for you, play with them...maybe pinch my nipples a little....hmmmm...they are so fucking hard...almost as hard as your cock..."

Ariel wanted to lean over and rub her brother's giant cock with her tits, but she knew she couldn't do that. It would be wrong. It was one thing to ask him questions and tease him a little, or even undress in front of him, but it would be totally inappropriate for her to actually touch him, or let him touch her...in that way...to make him cum...