Undercover Sis

[Poprockz]

“You sure about that? I may make you regret saying that.” Lizzy’s feet found purchase on the bench and she used this to bounce up and down with his hips wildly, her wet hair bounced up and down too as her tits jiggled back and forth.

She kissed him back like he was her air, moaning into his mouth as she felt his hands slide to her ass and squeeze her cheeks, kneading them like two mounds of sweet dough.

 

[Orgasmicallyfun]

Just when Matt thought their steamy shower fuck might be coming to an end Lizzy started to use her energy and bounce up and down Matt’s still very hard cock. He was beginning to think as long as he was inside of her crazy tight pussy he would never go soft. “How could I regret this? This pussy is amazing. So fucking wet and tight and so hot.” Fact was after today Lizzy’s tight teenage pussy was going to be on his mind all the time.

The two siblings kissed like they were the most passionate lovers. Their wet tongues rubbing and twisting together and exploring each other’s mouth like they couldn’t get enough of each other. His hands finding her ass and massaging and caressing her luscious round cheeks as she rode his cock perfectly with her overflowing cum filled pussy. A pool of white sticky fluid forming around the base of Matt’s cock that turned to strands of white that connected the siblings bodies.

 

[Poprockz]

“Just don’t forget that you promised me that I could have your cock WHENEVER I wanted, okay?” She smiled a mysterious smile, knowing that she might require his love in less-than ideal situations. In fact, she was counting on it. As for their current session, her stamina was running out and she could tell that this would be the last time they had sex. That morning, at least.

His little sister expertly rode him, grinding and gyrating on his firm body. His cum was sloshing out of her as she roughly forced herself on him. Her mouth sucked on his like she was trying to claim his very soul for her own, like a succubus and her prey.

 

[Orgasmicallyfun]

“Oh I won’t! Whenever you want your brother’s cock come and get it.” Matt said before she started kissing him again. She kisses his with such great passion and intensity he loved it. His hands squeezing and wiggling her teen ass while she rode him. She sucked on his tongue and so much of her saliva was running into his mouth it was such a wet sloppy kiss but it turned him on more then anything.

 

[Poprockz]

"I'll hold you to that... Oh God! Your cock is going to make me cum so hard!" She had been able to withstand the pleasure for a little bit, but her pussy couldn't resist when his cock insisted on taking her to paradise. She pounded him as hard as she could as she moaned a high-pitched cry, her eyes shut.

"Fill up my dirty incestuous pussy!" she wailed, hungry for his last load of semen.

 

[Orgasmicallyfun]

“Oh fuck I’m cumming!” Matt groaned loudly as he shot a fourth load of cum deep inside of his sister’s pussy. He leaned back against the cool tile wall of the shower breathing heavily. “That was... wow..” he said looking at Lizzy as they say there in post orgasmic bliss.

 

[Poprockz]

She kissed his cheek and slid herself off of him. At this point, her pussy looked like someone had thought to ice it like a cinnamon roll. Her legs still trembled a little, but she was able to make her way to the shower stream to wash herself off. His semen pooled at the drain of the shower as a testament to how many loads he had gifted her.

"Look at how much there was." She bent her knees and put her fingers to her pussy, using them to hold the entrance open. Even more cum gushed out at that point, washed away down her legs. She held eye contact with him while doing this, wanting ho see him react to his own handiwork.

 

[Orgasmicallyfun]

Matt stayed seated on the cool wet tile bench on the shower watching Lizzy start to wash herself clean of all the cum. There was so much of it that it was hard to believe it all came from just one person. “I can’t believe I came that much.” Matt said as he eventually stood up and went under the water to wash all the cum and his sister’s juices off of his cock.

 

[Poprockz]

“I can’t believe it either,” Stacie chuckled, having cum several times over the course of watching them in the shower.

They all finished up cleaning their hair and bodies and exited the shower. After drying off and dressing, Stacie returned home. She had promised Matt that she would come back over sometime soon to have some fun.

Lizzy and Matt spent the rest of the day cuddling on the couch watching movies before going to bed. The next day, their parents arrived home and the work week started over again. Lizzy invited him to go to the movie theater with her that next Saturday.

They stood in line at the movies, waiting to buy some concessions. Lizzy wore a short pink skirt and a white blouse, with cute little pink heels.

“I can’t wait!” She whispered excitedly.

 

[Orgasmicallyfun]

After the shower Stacie left and returned home and Matt spent the rest of the day cuddling and watching movies with his sister. The next day he had to reluctantly return to work and was gone for most of the day every day until the following weekend. He barely saw much of his sister until then and things felt like they were back to being normal brother sister type relationship between them, but Matt couldn’t stop thinking about him and his sister having sex.

On Saturday they made plans to go to the movies. Matt wore jeans and a light blue polo. “I’ve been hearing good things about this movie.” Matt said as they waited in line at the concession stand. Matt ordered an icee and some popcorn letting Lizzy order what she wanted before he paid. “Alright we are in theater seven.”

 

[Poprockz]

Lizzy chose an icee as well, turning from the counter with her prize and walking to that particular theater with him. The smell of popcorn wafted through the air as families and couples chatted in the lobby. It faded as they went down the hall and entered the dark theater. There weren’t too many people there, but there were a couple groups.

His sister pointed to the very back and entwined her fingers with his, leading him by the hand back to the row she desired. Her hand was slightly cold from holding the icee. The movie that was playing was called Olympus and was a romance movie.

They settled in their seats and started to watch, Lizzy snuggling against his side.

 

[Orgasmicallyfun]

The two siblings made their way into the dark theater and Lizzy grabbed his hand leading him towards the two seats she picked out in the back of the theater. Once they settled in Matt started to dig into the pop corn and occasionally sip his cherry icee. “This movie better be good.” He said between handfuls of popcorn.

 

[Poprockz]

She nodded and settled in, sipping her cherry icee as well. The commercials were good, and then the real movie started. Partway through the intro, he felt a hand on his thigh, rubbing gently up and down.

His sister continued to watch the screen as her hand started to try to coax him into an erection. He saw her slowly lick her lips, then bite her bottom lip. Her other hand hand was rubbing her own bare thigh as she watched and waited.

She knew that if he protested, he would have to do so very quietly or risk drawing attention to them. However, she wasn’t doing anything too naughty. Yet.

 

[Orgasmicallyfun]

Matt was interested in a couple trailers that played before the movie. Once the actual movie started he soon felt his sister’s hand on his thigh. There was nobody in the row they were in so he let it slide for now. Soon her fingers were grazing the snake in his pants and he looked over to see her licking and biting her lip was began to turn him on.

His cock slowly stiffening in his pants and when he looked down and saw her other hand on her bare delicious looking thigh he became harder even quicker. “What are you doing?” He whispered.

 

[Poprockz]

Her hand delicately unbuttoned his pants and pulled the zipper down. She then slid her hand inside his boxers to find the toy she was looking for. His cock was grasped by her eager hand, and she slowly started to pull on it.

She blinked innocently and leaned toward him. “I’m enjoying the movie. Aren’t you?” Her other hand disappeared under her skirt, but he could imagine what her fingers might be doing under there.

 

[Orgasmicallyfun]

Matt’s hands gripped the arm rests of the chair and he looked around the theater when Lizzy unzipped his pants and slipped her hand into his boxers finding his long thick meaty cock. Once her hand touched his cock it brought back all the memories of the amazing morning a week ago and his cock was soon fully erect.

“What if someone catches us?” He asked quietly obviously nervous about doing something like this in a public place but he was secretly so very turned on.

 

[Poprockz]

“Then we’ll just have to avoid getting caught.” She whispered, a sly smile on her lips. She wasn’t sure why, but she was so turned on right now. Her body craved his touch, his lips, and his cock. It didn’t matter that they were in a public place, she would have her urges satisfied. They look of nervousness on his face only turned her on more. There was something about making him squirm that got her so wet.

Her hand inside his boxers tugged on his member, feeling him becoming rock-hard from the stimulations of her masterful fingers. “Can I sit on your lap, big brother?” She murmured, rubbing her clit under her skirt.

 

[Orgasmicallyfun]

Being naughty with his own sister in a public place had Matt so turned on. He looked between hi sister’s legs and saw her rubbing her pussy. He could tell even if he said no she would soon be on his lap anyways. After another quick look around Matt nodded and told her yes.

 

[Poprockz]

His sister took their icees and popcorn and set them down on a seat a couple seats down. Returning to him, she pulled up her skirt a bit scooted herself backward onto his lap. She took a thin blanket out from her purse and put it over her lap. Her hips moved a bit, rubbing her round ass against his lap, his cock still constrained within his boxers. She leaned back against his chest, her hands cupping her own breasts a bit as she teased him.

 

[Orgasmicallyfun]

“Oh fuck yes!” Matt whispered watching as Lizzy sat on his lap and began to grind her big butt against his throbbing erection. He was so hard and his boxers were wet from his precum due to him being so turned on from doing this in a public place. His hands resting on his sister’s hips and soon they ran up to her big warm breasts and he started to caress them.

 

[Poprockz]

She arched her back a little as he gently held her soft mounds and started to massage them with care. Lizzy put each of her legs over either of the arm rests to place her feet on the other two seats- the arm rests helped to hold her legs open. Her soft hand reached downward under the blanket and pulled her underwear to the side in preparation for what was to come.

She leaned back so that her lips were next to his ear. “You told me I could have your cock whenever I wanted, Matt. Well I want it now.” She said in a barely audible whisper.

 

[Orgasmicallyfun]

“I did say that. I just never thought you’d hold me to that especially in a movie theater.” Matt said softly back to Lizzy but it was obvious he wanted just as badly as she did because when she pulled her panties to the side he pulled his massive cock out of his boxers to make it easier for her. “I don’t mind at all. Your brother’s cock is here for you.” He whispered back.

 

[Poprockz]

Her hand reached back and guided his head to her entrance, putting it just the head inside. Fluids of arousal dribbled onto him, showing him how much she desire him and only him. Lizzy stayed in that position and moved her hands to the armrests to grip. She then moved her hips in circles, keeping his head just inside her; it almost slipped out a couple times, but she didn’t let it escape her. He was so tantalizingly close to being inside her, but she didn’t move her hips downward to give him any relief.

 

[Orgasmicallyfun]

When Lizzy hovered above his cock her juices began to drip down on him. Her barely legal pussy was so wet that he felt her warm juices dripping down onto his cock. Then he felt her warm hole swallow just the tip of his cock and her teasing was driving him wild with lust. “Please. I want to be inside of you sis!”

 

[Poprockz]

“Make me!” She turned her head and stuck out her tongue at him, continuing her denial of her warm love tunnel. Her nipples were hard from the graceful touch of his hands, and could be felt through her shirt. Lizzy enjoyed hearing him beg to be inside, to conquer her once more and mark her as his own with a stream of semen. She could tell he was becoming impatient, but it just made her hotter.

The movie continued in the background, several of the other couples holding hands or leaning against one another. If only they knew to look back to the back of the theater at the two siblings.