With only slight hesitation

Jon stared at his childhood friend, wondering whether this was a good idea or not. He still hadn't figured out which kind of guy Karyn was behaving like. Due to a combination of the vagueness of his wish and the fact that there was multiple ways for any one guy to behave, he felt positive that, the way his wish was interpreted, each girl in the world was randomly distributed into a stereotypical male archetype, and behaved accordingly.

Already, he could eliminate jock since it was evident this version of Karyn wasn't big on fitness. Or sports for that matter, unless she now enjoyed watching them. Nor did she seem like a nerd, at least not the sociable kind. Even her posture wasn't given him many clues, despite all the changes to it. Karyn, no longer prim and proper with how she sat, was instead settled with her legs open, idly slouching onto them, resting her elbows on her knees, and was idly scratching her crotch as she waited. Because of the angle she was slouching and the fact that her men's muscle shirt, most likely now considered "unisex" in the sense where it was a shirt for men that girls just wore instead of wearing shirts that were actually designed to take their bust into account, if he wanted too he could lean forward and most likely catch a good glimpse of her tits. Somehow, he also doubted she'd care.

Still, it was unequivocally Karyn, and he trusted his friend. If she wanted to make a sound wish without him in the room so that she could enjoy his ignorance, who was he to judge? After all, he'd done the same thing - although unintentional. It was only fair.

"Alright, go for it." He exclaimed, tossing her the stone.

She caught it with the same indifference he'd seen all his male friends sport when he gave them something, choosing to only flash him a wide grin. "Thanks bro!" She brought the stone close to her face, inspecting it with mild curiosity. "Man, this is going to be so awesome!"

Not wanting to delay the inevitable, Jon turned and headed towards the washroom, leaving Karyn alone with the stone.

While under the guide of inspecting the stone, Karyn instead had her eyes locked on her friend's cute little butt as he made his way out of the room. She bit her lip, watching him go, suppressing the urge to run up to him and pinch him. She probably would have, had he been some stranger in a bar and she wanted to take him home. Or one of her other various girlfriends or boyfriends. But alas, Jim had made it clear where he stood.

Karyn was aware of her friend's feelings for her - he'd asked her out long ago when the two of them were in the middle of their high school careers. But, while Jim wanted something more serious, Karyn, who had only just begun discovering the wonders of sex, wanted instead to let loose and fuck around. They all did, back then. Girls approaching guys, guys approaching girls; teenage hormones essentially made everyone fuck like rabbits.

Jim had always been on the tamer side of things. Sure, most teenagers and young adults ran around rampant because everyone had sex on their minds, but there were some, like Jim, who's sex drive wasn't as explosive. In a way, she respected him for that.

Didn't change the fact that she wanted to fuck him. In many ways, it was part of the reason why she was still friends with him. He was like her golden snitch - the one guy she'd always been unable to bed.

Feeling the rock in her hand, she looked down to her now more than ample bosom and grinned. She'd like his earlier ogling of her. Human's couldn't help but stare at what they liked; men looked at tits, girls looked at dicks, and she was certain that Jim was still interested. However, she didn't want to immediately wish him to have sex with her. Karyn had always been a fan of chasing her men, and ultimately she wanted to seduce him naturally.

Wouldn't hurt to stack the deck in her favor however.