I was watching World's Greatest Home Movies or something like that. Anyway, a home video clip of someone cutting her own head open and drilling a hole in her own skull freaked me out TOTALLY. But as usual, a morbid curiosity of this thing called Trepanation led me to a whole bunch of links in a search. God damn! Its even listed as one of the methods of body mutilation. 5 ear piercings is the furthest I'd go. I'm a wimp.