"Are you going to put it in?"

"Chris, hurry up and get under the blanket with me!"

You had been rushing to change clothes after your mom made you run around doing errands once everyone arrived, so all the guys had taken up the couch and recliners with their girls by the time you were able to change, leaving you and Rose to cuddle on the floor. You slid in behind her and immediately felt the soft press of her cheeks against your junk. In your hurry, you had ripped off your undies with your pants and just thrown on the first pair of athletic shorts you saw, leaving you free-balling with nothing but a worn, silky barrier between you and Rose's perfectly round butt. Her soft biking shorts were exquisitely tight on her figure as well; the crease in her shorts highlighting each ass-cheek in all their glory. She felt your softness and giggled, before wiggling herself back into you, firmly entrapping your manhood between her delightful pillows...

"There, that feels better... Don't you think?"

You could just bite your lip and whisper back to her in the affirmative, your body already twitching with nervousness as the movie began. It was some type of period drama and as the minutes went on it became clear that Rose, nor anyone else in the room, cared about what it was. You started hearing sounds coming from the other couples as they made out or fooled around, so it was clear your mom wasn't paying attention to anything going on; and Rose's mischievous flexing and releasing of her thighs and butt had your penis **** to thrust into her squishy backside, but your nerves were still on high alert with everyone else in the room; but for the next 40 minutes you're at her agonizing mercy.

"Hmm, I'm getting kind of bored just laying here. Let's try this..." She took your hand, which had been resting somewhat awkwardly on her side, and put it under her shirt to rest on her chest. "There. That's it. The girls always seem to do the trick. Now kiss me."

Rose pulled away from you a bit to tilt her head back to look up at you, and not one to miss a chance you leaned in to meet her. A peck on her lips at first, but when she laughed you realized she wanted more. So diving in once more, your tongue brushes her lips as she lets it into her mouth, and as her tongue meets yours, your hips start gently pumping automatically in excitement, while your hand was doing its best impression of a massaging bra. For minutes, the only sound in the room was that of lips smacking, tongues lapping, and soft moans and grunts from each couple around the room; all equally noticeable over the drone of the movie.

"Get your shorts off."

Pulling back in shock, it takes Rose nodding at you to confirm what she just said before you start to move, and your athletic shorts were around your knees in a second while Rose took a few more to peel her skin tight biker shorts down her thighs to push her perfectly round, naked bottom onto your dick for the first time. The feel of her had been heaven before, through her shorts, but skin-to-skin contact was like being one with the universe itself! Her cheeks swallowed you completely; your penis lost in what you swore was her pussy. Not wanting to waste any time, you began to thrust into her soft, warm folds... Your strokes were gentle, and careful, obviously not really having the bravado to go full out in a room full of your friends. After a few seconds, Rose pulled away from you and looked back.

"Babe... Stop playing with me. Are you going to put it in?"

It was a whisper and a quick glance; long enough for you to see the look of playful confusion on her face, and hopefully short enough for her to not notice the panic on yours in response. Reaching down to feel yourself, confirming that you were as big as usual, didn't reassure you. Your dick and balls were wet, but now you weren't sure if that was from penetration or if you were simply swapping sweat with Rose while your pre-cum leaked all over. Scooting down a bit to hopefully get a better angle, you used your fingers to slip her cheeks apart slightly and aimed for the gap, hoping to enter her in one dramatic, confident motion. She gasped and tensed immediately, as you felt her hole accept you inside. It wasn't as wet as you imagined, and as you weren't able to glide in and out of her with each thrust. Instead, it felt like your tip was trapped in her, and each thrust just crumpled the rest of your dick into itself. Taking her silence and rigid body language as a sign to go harder; you humped faster, instead of with any sort of rhythm. After about a minute of furious shallow pumping, she relaxed and you began to feel more of her as she welcomed you deeper inside. Your confidence gave way to orgasm moments later, as the feel of her sticky wetness around your dick made you lose control. You froze as cum flew from your tip into her, just now thinking about your lack of protection...

"Uh oh..." was all you could muster.

"Oh my god!" Was Rose's response, as she bolted up, taking the blanket with her and leaving you exposed on the floor, crotch slimy with what appeared to be your own cum. She went right for the bathroom, and you had to scramble to get your shorts back on as your friends put all their attention and shock onto you. Most laughed and a few girls yelled, "Gross!" as you hurried after Rose. You caught up to her has she was wiping her ass with toilet paper, which she proceeded to throw at you.

"What the hell was that, Chris? First of all, I give you the green light to fuck me and you try to put it in my ass? Then you don't even do that right, and just bust a nut on me anyway? Like, what the fuck were you thinking? Did you want to ruin my night?"

"What? No! I thought... I mean, that was your?"

"Oh, so you thought you were in my VAGINA when you just hit my backdoor and couldn't get in? Did you seriously think we were actually having sex just now? Oh my god... You had to know Chris... Look."

She put her foot up on the toilet and spread her cheeks to show you "where you were" and the redness from your thrusting and subsequent eruption was plain to see. You may have pushed your tip into her asshole for just a few moments, but it looked like most of your time had just been poking at her ass crack all around it.

"And you just came... Like without thinking about if you were inside me or that there was no way you should just do that without asking, or if I'm on birth control, or about if I was even ready, or anything! Ugh. I can just feel it on me still..."

Rose made a move to wipe herself again and you decided to act... It was your mistake, so you should bear responsibility and make up for it. Your tongue was in her ass in a flash, and her cheeks clenched around your face just like they had around your dick earlier. The risk of her being mad was worth the potential of her not hating you, so like a true soldier you gave her ass all you had: up and down her crack, plunging into her asshole, doing circles around her ring as your hands mashed and slapped her cheeks into your face... Sweat and cum were all you could taste, but she didn't pull away, and she definitely started rubbing her clit as you debased yourself for her. You had to make out with her ass for nearly 10 minutes for her to finish; and even then she wasn't really happy with you.

"You're such a pervert! Jesus, that was... a lot. And you know neither of us can go back out there until everyone leaves right? And I think you still owe me... something for embarrassing me in front of everyone. No, don't get up, stay down there on the floor, you smell like ass..."

It was just over fifteen minutes before Kira and the other girls started knocking to tell Rose that everyone was heading out. You had just been kneeling on the floor on the bathroom mat while Rose sat up on the counter resting her feet on your shoulders, which you took as a penance for how the night had gone. Rose forgave you enough to give you a quick hug after you grabbed her bags, and washed your face, before hopping in the car with Kira and Liz. You could tell that all the girls were kind of avoiding eye contact with you, and all your friends were joking at your expense as they left, but it wasn't all bad... Your mom was already up in her room, so with everyone out of the house you just locked up and got in bed. You were sure there was going to be a mess in the living room to clean up, but that would be tomorrow's problem.