"Okay, class," announced the gym teacher, "we're gonna be working on volleyball today. Get into groups of three on each side of each net, and wait for me to pass out the balls."
As Jenny got into Amanda's team, she muttered, "I wish every time Amanda hits the ball, her outfit would become a little skimpier." With that, she prepared for the sexiest match of her life.
It didn't disappoint. Amanda, for all her distractions with her clothes, was a good player, and managed to hit the ball back over the net more often than Jenny or their other teammate could. And each time, her clothes covered less and less skin. By the halfway point, her gym outfit has been reduced to a thin bikini, which still squeezed tightly against Amanda's nearly-bare breasts and dug into her pussy and ass. Jenny, thinking that it couldn't get any skimpier, silently undid her previous wish, trying to decide on a new one for the rest of the class...