Concept
"Prom Night Change" - outline - alternate history of high-school, where girls get to 'change' to a guy's fantasy about once a year, starting when they're 18, traditionally at prom
guys are girl-crazy, and girls are on top.... he chickens out before asking a nerdy girl, but then she turns around and asks him... and he's very excited.
he picks her up, and on the way, she asks if he wants to 'do it now?" .. he's uncomfortable, and suggests maybe they should wait until after. she thinks that's weird, but okay.. whatever he wants
at the prom, something is very weird. the guys all look normal, but the girls are all outrageously sexy women (pic pic pic pic)..
he casually tries to ask what is up with all these girls, and his date just acknowledges they all got really lucky. he asks again, 'are you sure you don't want to go do it now? it'll be alot more fun for both of us. we can just go find a bathroom or hallway somewhere."
"what?" he spits out his drink. "you want to have sex in a bathroom or hallway?"
"no!" she laughs heartedly. "is that what you thought I was talking about? No, I'm talking about my change. When you agreed to come with me to prom, I just assumed you were going to change me. I mean, I know we didn't talk about what you're into, but it's not like us geek girls have alot of options. Come on" and she dragged him out of the ballroom.
---
in a hidden hallway of the school, starts hiking up her dress in a very impolite way, and reaching into her panties, almost like she's retrieving something.
"wait, what? I guess I just don't know much about how this works. Can you explain it."
"Sleeping during that part of sex ed? This is my ovasyn," she opened her hand, revealing a small bizarre wet looking mass of tendrils. "Just turn around, and I'll place it on your neck, and it'll burrow in and tap into your spine. And then the magic happens."
"The magic?" He said, still looking at the weird thing with disgust.
"Seriously? Are you trying to embarrass me? Then we you know, kiss, or fondle, or whatever, and the more aroused you get, the sexier I get... basically. You can't not know how this works. Are you living under a rock or something?"
"No, no. Of course I know, generally. I guess I Just don't know the specifics. Is there any danger? for me?"
"Only of making me so sexy I stalk you the next year. Most of the girls want macho jocks, but the research suggests the geeky guys have the most ova energy and the sexiest fantasies. Ready?"
He really wasn't but what was he supposed to do? He turned around, and she came up behind him. He felt a slimy wetness on his neck, then a sharp pinch. "Ouch!" But a moment later, the sensation went away, and it was replaced by something else, a moment of mental fuzziness. He rubbed the back of his neck, but he couldn't feel anything.
"It's okay, Peter." His vision was distorted as she held his hands. "Just give it a minute. Breathe." After several seconds, the dizzy haze faded, and he felt more normal. "Better? Okay. Come here." She wasted no time pulling him in, and landing her lips on him. Sucking, lapping, biting at his lip in a way that was so sexy it seemed more fit for a porn movie than a geeky high school senior.
As their lips met, his tongue sloppily pushed into her mouth, but hers immediately and forcefully pushed back. She grabbed and held his head, loudly shoving him against lockers as she aggressively wrestled control of him and the kiss. He felt like he was being sexually devoured, and loved every minute of it. Her tongue exploring him, her body pressing into him. At one point, he felt her hip press into his crotch, and became embarrassed she might notice he was already getting hard.
When she finally let go, he was so flustered he gasped for air. She was ruffling through her purse and pulling out a small compact, looking at herself in the mirror. For a moment he thought it was strange, and then he saw her face start to change. The awkward shape of her chin, the proportion of her nose, both faded, as her face became less plain, and more pretty. And that wasn't the only change. Moments ago, her figure had been unremarkable, but suddenly shape appeared under the tight fabric of her dress. Hips, waist, even a bit of bosom. "Ohh, fuck yeah. You're a rockstar, Peter. That's a big fucking change for one kiss." She declared trumphantly. She slinked back to him, again pressing him against the lockers, "want to go another round right now?"
"Another round?" He said, more mimicing her than asking a question. It was a bizarre feeling, seeing the same girl suddenly prettier, and coming onto him so strong. She had a sinister smile, as she leaned her body into his, and slipped her arms up under his shirt. And kissed him again, the action of her tongue more measured this time, more playful. Again he felt her hip bump his crotch, but this time it was no accident, as she obviously and intentionally ground into his erection. When their kiss parted, she held a sinisher smirk, as she dramatically rubbed her body down and then up against him, like she was grind dancing to some unheard music. "Wha.. are you... doing?"
"Don't pretend you don't like it. I could feel you even before that lighting rod in your pants. God, you're such a fucking evo stud. Look at me." She stepped away, and she wasn't kidding. Her face was gorgeous, and her body looked amazing. She'd gone from geeky sidekick to teen glamor model in minutes! (pic pic pic) "Most girls have to get at least to third base to look this good. " She offered her arm out, "shall we?"
Several steps down the hallway, he was puzzled about what to expect next, "is that it then?"
"Is that it? No way. We're going to go dance, and I'm going to grind all over you, and if it keeps going this well, you're in for a very lucky night, and a lucky year, mister."
----
A couple hours later, they were back in his car, really his parents car, heading for her house. He glanced to the passenger seat, where he could hardly believe the sight of his date. She did not look like she was in high school. Maybe a twenty something sexy bartender, with big rack. And she had gotten taller too, maybe an inch taller than him in her heels. And she had been all over him, and was currently eyeing him hungrily. "Eyes on the road, mister. My parents left me the house, but we have to get there alive first. Though maybe it wouldn't hurt to give you a tiny preview."
Peter had just been told to keep his eyes front, so it seemed like a bait to look back. But even from his periphery, he could see her stretching her top, showing off two big round bare breasts. He had to look over, and when he did, he startled himself, gently yanking the wheel and forcing himself back on the road, "Holy shit."
"That's right my little evo stud. If these aren't the prettiest tits in the school, they are going to be once I let you play with them. Here, keep your eyes on the road," she reached for one of his hands, guiding it to soft round shape.
Peter didn't feel like this was very safe, but he somehow managed to squeeze and drive at the same time. After a minute he let go, and made the final few turns leading up to her house. The car had barely stopped when his date threw open the door and ran up her lawn. By the time Peter reached it, she was already inside, her heels in the middle of the floor, and her dress littered on the stairs, like a breadcrumb for him to follow.
He didn't know the house, so it took a few moments to find her bedroom, which was dark, with candles burning. She was lying on her bed, wearing a stretchy mesh halter and string bikini bottom. (pic pic) Just seeing her made his heart skip a beat. "You're beautiful," he offered. Even as he stepped in, he felt nervous. This had gone from first date, to going all the way much faster than he expected. "We can slow this down if you want. I like you. It doesn't all have to happen tonight."
"You're right. Good idea. Come on over here," she sat up and patted the bed, "and we can just relax, and take things real, real slow. We don't have to do anything, if you don't want to." That made him feel a little better. He sat next to her on the bed, feeling quite a bit over dressed. "I'm just going to loosen this up a bit," she warned, as she started unbuttoning his shirt. "How about you take it off, so it doesn't get wrinkled." He still had a t-shirt on, so that didn't seem like going too far.
"I'm sure it's weird, seeing a girl change and throw herself at you. Just think of it like a mutual exchange. I get what I want," she leaned in, placing her lips next to his ear, and whispering playfully, "and you get to whip your cock out and let me play with it." Peter exhaled, his heart skipping a beat as she straddled his lap. "I promise to do it real slow," she said, her arms holding him as she pulsed her body against him. "Mmm, that's right. Don't fight it." She leaned her head back, feeling the evo start to flow again.