In the story im reading called the boy who couldnt die it talks about a kid whos best friend died in a plane crash so he goes to this physic in new york and ask her to make him invulnerable.So that he couldnt be hurt or even die. Also he wants to test out if her spell worked and it did so far. He first tries to cut off his nipples and he couldnt do so then the next day in school he asks the hottest girl in school on a date. Butits this dude girl who is the toughest kid in school and the kid tries to beat him up but he didnt feel a thing.