Well not the words themselves, but people's reactions to them. There's a film just coming out now (horrible bosses) which is a comedy about three serial killers who band together to kill three people they don't like. (rather than just say “avoiding them” for instance)
It's caused a storm of controversy, not about murdering people who have annoyed you, but something apparently much worse. The actors use potty words. That's what's got it an “R” rating. I'm amazed and have complete total absence of understanding. How on earth could murder be acceptable but potty words are not? I really can't comment on that further as I've got nothing to attach to as a point of reference. I'm completely baffled.