So "Smells Like Teen Spirit" came on the radio today, and it hit me for the first time in my life that it's probably not a song about deodorant. (Not that the lyrics help - Weird Al's version has the line "It's hard to bargle nawdle zouss(?) / With all these marbles in my mouth" and it's scary how much those lyrics sound exactly like the original . . .)
I went and looked up the lyrics and yeah, nothing deodorant-like in there. But then I found the Wikipedia page and discovered that the title came from when one of Kurt Cobain's friends spray-painted "Kurt Smells Like Teen Spirit" and he assumed it was some statement about him being a revolutionary and it turns out she really was saying he smelled like his girlfriend's deodorant, which was indeed called Teen Spirit.
So my assumption that the song was about deodorant was only half wrong