IP: I think that's the thing - parents don't provide context for their kids. So they listen to language in music, repeat it, and have no idea why it's wrong. Doesn't mean that makes it A-OK, it means the kid lacks the context to understand why they shouldn't be saying that - something their parents ought to be teaching.
(then there are kids who know FULL WELL what the word means and use it religiously - go on XBL, play CoD and you'll hear it with full understanding of context)

