It was too late. Karyn put her hand on her mouth, realising what she had just done. The words didn't let much choice. I took the stone rapidly from her to be sure she didn't make any more mistake.
Right in front of me she started to transform. First i heard a crack as her clothes shredded, letting a second pair of legs grow behind her. Those legs became horse legs as she got taller. A litte more second later, stood in front
of me, a big MALE centaur.
"Why are you a ma..." I stooped dead in my sentence as hand, by themselves, pushed my pants down, turned 180, and bended forward lifting my naked ass in the air and toward the big stallion.
Then it occured to me, she wished to be a FUCKING Centaur, so there was only one candidate near her enough to get fucked. And since he choice of word didn't left much interpretation, she would always be a centaur, and always be fucking...My god no!!!
As the male guided his erect genital toward my ass, i suddenly said "Oh, i just wish you didn't have to fuck me THERE!!"
Then i reallized what i just said as i felt the tingling....