I'm truly astonished that no one in this thread has yet mentioned George Carlin's famous list of "seven words you can never say on television": shit, piss, cunt, fuck, cocksucker, motherfucker, and tits. ("And what is tits doing on that list anyway? It sounds like a snack!") Of these I am equally surprised to see that your list and the commenters so far fail to include more than half, to wit: piss, cocksucker, motherfucker, and tits.