A young woman takes a job at a strip club thinking she would be a dancer, but finds herself transforming into a relief station- a kind of low-tech, cock-milking machine!

John, the football player, gets turned into a bimbo for the locker room to share

That ever persistent problem you see with wishes where I person doesn't make themselves entirely and ends up with results they didn't expect. That doesn't mean they can't enjoy those results, though.