As always, if anyone wants to run with it, have at it :-)
Based on an rp session, so it might be a little disjointed. I edited it best as I could.
Jack and his mom are on vacation on the beach. They go to use those little changing houses to change into their swim gear, but realize that they're coin operated. They only have enough coins for one room, and mom suggests they use one together and just turn their backs as they change.
He thinks for a bit, then agrees, wanting to try the water. They get in, and lock the door after depositing their coins.
He turns his back and pulls off his shirt, then his pants and boxers, quickly pulling on his swim shorts. He can hear mom undressing behind him, and can't help but sneak a peek. He watches mom pull her conservative bathing suit over her ass, the flesh jiggling a little. To his horror, he can feel myself starting to get hard. He can't turn around like this, and he realizes they can't leave the room while he's hard, it would look weird.
Mom finishes putting on her bathing suit and says "ready?" He stammers, "uh, just a minute mom, slight problem with my swim shorts..." He remains with his back turned.
"What are you waiting for," she says, letting out an exasparated sigh. Jack blushes, not knowing what to say.
She turns around, putting her hands to her sides, standing akimbo. "Jack, turn around, this is silly!" "But mom, I don't think I should..."
"No buts, turn around!"
He slowly turns around with his hands in front of him, attempting to hide his boner. She gasps in surprise, not having realized what the problem was. "Sorry mom, it'll go away soon enough and we can leave the room..."
"Well, alright," she says, trying to comfort him. They stand looking at each other, and he can tell she's getting annoyed. "How long does it usually take to go away?" she asks.
"I dunno, a couple minutes usually?" he mutters, red in the face that they're even having this conversation.
"We can't stay in here forever, you know." says mom with a stern look on her face.
"Well I can't really do anything about it can I?" says Jack, slightly pissed off to be blamed for something out of his control.
"Sure you can," says mom. He slowly starts to understand where she's going with this line of thought and blushes harder. "You can't be serious mom!?"
She rolls her eyes. "Of course I am, go ahead, jerk off and get it over with so we can get out and enjoy the beach"
He reluctantly turns back around to face the wall and pulls his dick from his swim shorts and starts stroking it. The thought of his mom right behind him is both making him feel increadibly hot, but also it's making it hard for him to come, it's just a little too weird.
"This is taking you forever Jacky", hears Jack as he imagines her tapping her foot behind him in her swimsuit
He starts going faster, but it still isn't helping. "Damnit Jack," says mom, "turn around, I'll help you get this over with." Mom pulls Jack around by his shoulder and grabs his dick. He looks surprised, "What are you doing mom?!"
She starts stroking his dick as he looks on in amazement. The feeling is incredible and he can see her breasts bouncing in the cleavage of her swimsuit.
"Oh god" he mutters.
Mom can tell he needs more before he's going to come, and spits on his dick to lubricate it, keeping up the motions
Mom jerks him off faster, angrily snapping at him, "Damnit Jack come already so we can go swim!" Jack is dizzy with what's happening, not believing it's real.
"Sorry mom, it's just a little weird for me, this whole situation..." "I don't care if you think it's weird, this is taking too long," she almost growls as she puts her mouth on his dick, licking down the shaft, taking him in her mouth.
"Oh god mommy, that feels wonderful"
Mom sucks him for a couple of minutes, lubricating his dick, feeling its warm hardness in her mouth. He moans as quietly as he can, not wanting to alert whoever are in the next rooms.
Still, he's not coming. She stands up, frustrated. "What more do you want? You can't fuck me, if that's what you're thinking, I'm your mother." "I swear, I wasn't thinking that," says Jack, trying to defend himself, his hard dick bobbing between them, wet with her saliva.
Mom think for a bit as his dick remains hard. "Well, I suppose it wouldn't be the same if we..." Jack looks at her, his face a giant question mark.
Mom pulls down her swim suit and turns her back on Jack. "Put it in my ass pumpkin, fuck mommy in the ass." Jack's jaw drops, and he takes a step forward, his wet dick lined up against her asshole. "Are you sure mom?"
"You know damn well I'm sure. I want to go swimming today, not tomorrow!"
He plunges into her ass, pushing to the hilt as she lets out a deep groan.
"Now finish up so we can get out of this god-forsaken room!"
"Yes mommy," he answers as he starts pumping into her ass, finally feeling the climax approaching.
He starts going faster, thrusting hard into her ass. Between grunts she hisses "come in mommys ass!"
"Yes mommy, I'm going to, I can feel it" he thrusts deeper and harder, finally stopping as he's pushed hard against her, spurting into her asshole.
"Oh jesus christ mommy" moans Jack as his sweat drips on his mom's back. "Finally," says mom, adjusting her swimsuit, "that was about time!"
The thing I like the most is that the mom is pretty much keeping it "non-sexual" even though she's blowing her son and making him fuck her ass. To her, it's all just a way to remove her son's hardon so they can get on with the day.
Edit: See also my yoga story idea here: http://forum.literotica.com/showpost...3&postcount=22