Andrea couldn't take her eyes off Nikki's now fully erect cock. It had to be at least ten inches with perfect, heavy balls hanging tantalisingly below.
"You know you can touch it if you want to," Nikki purred.
The last of Andrea's resistance crumbled, the wish erasing more and more of her masculine self. Andrea reached out and gripped the magnificent shaft, feeling it throb in her petite hand. Nikki sat back onto the edge of the bench, guiding Andrea's head down towards her crotch. Andrea felt her knees buckle and fell forward, opening her mouth in surprise. Nikki wasted no time guiding her parted lips straight down over the glistening head.
"I'm sucking a cock!" Andrea thought, as Nikki moaned her name. As Andrea got into a more comfortable position on all fours she reached down between her legs and wasted no time stuffing two of her fingers into her new, and by now dripping, cunt. Andrea began eagerly slurping on Nikki's cock, bobbing her head up and down trying to take it as deep as she could.
"Oh you're such a dirty little slut," Nikki moaned, "who knew you'd be so good at sucking cock!" Nikki grabbed her best friend's head and forced it all the way down her shaft and held her still. Much to Andrea's surprise she was in heaven, having felt no discomfort at all. What Andrea did not know was that the sexually charged nature of her wish had subtly changed the nature of sex to be easier and far more socially acceptable. Andrea looked up into her friend's eyes and noticed them flicker towards the door of the changing room, and an amused smirk appear on her face.
"Well Nikki, it looks like you're having fun," came a voice from behind Andrea.