prison yank
When someone grabs you by the balls and gruesomely yanks them as hard as they can. This can result in either an extreme case of blue balls or a ripped appendage altogether.
Fred: Why is Jeremy holding his fucking nuts like that?
Alfred: He got prison yanked for ratting the boys out.
Fred: I hope I never have to experience that.
Alfred: He got prison yanked for ratting the boys out.
Fred: I hope I never have to experience that.