Jason was learning a very important lesson if you're going to cheat on your girlfriend don't get caught especially when she says she's a witch.
as you might get turned into something worse than a frog which was what happened to Jason.
As he found himself in a very strange predicament after his girlfriend confronted him on his cheating behaviour and he found out her magic was all too real.
As she turned him into a female sex doll who could feel see and experience everything that happened to it & put him to work in the one place he would get plenty of action the local state penitentiary.
Where she made the warden believe it was his idea to give the men 30 minutes alone with the sex doll for good behaviour as a form of stress management.