Yep, we get all bent out of shape and upset because of a few words.
While simultaneously ignoring the bad (almost evil) programming in songs... because it has a good beat. (and I don't really listen to the words... but your subconscious does!)
Anyway, if you normally don't use swear words, and then you suddenly start, your friends no something is up. Unfortunately with potty mouths everywhere today, that subtle (or not so) indicator that someone has crossed a line is no longer there.