It had been a mistake to go to the Sandals resorts, as a woman.  Bill had changed himself when he arrived, using the medication that his sister had given him.  She said he needs to experience being a woman before he got married, but he needed to be careful.  To many orgasms he would become addicted and wouldn't be able to change back.

What she didn't say was that the meds ramped up her libido, made her so horny that after her first change she had masterbated for over an hour.  Still horny, she ordered room service, just to be able to fuck the steward. 

Billie had taken to laying out by the pool, and any guy that was interested she let use her pussy to relieve themselves... she was forever stuck, as her craving for cock never let up. 

His sister finally found her former brother being fucked by the pool... Well, she thought, at least Mom will get off my back for having a child, looks like Billie will take care of that!

Billie screamed in pleasure as the cock pulsed and filled her pussy... she was a very fertile girl...