To be honest, I laughed a little when I saw this, just because of how old the song is and how many times I've unwillingly heard it throughout the course of it's existance. Not that it's a bad song, I definitely like it, if I were scanning radio stations and came across it, I'd probably listen to it. I just don't understand how you're NOW just hearing this song. It must be nice to be out from underneath the rock.
I remember when this song came out, my parents both were asking me about this upbeat song they were hearing on the radio, (even trying to sing parts of the chorus to allow me to better identify it). I remember reading in Rolling Stone right after the song blew up and the lead singer was talking about how surprised he was that a song about smoking crystal meth and having oral sex became involved in the Top 40 airplay. My parents didn't run out and buy the CD or anything after I told them that.
Beneath a catchy, upbeat melody, the song contains dark lyrics about a drug user's descent into crystal meth addiction and his sexual activities. However, the single still became a major hit. The words "crystal myth" are frequently censored on radio stations, or "blurred" out of recognition. The words are a play on the phrase "crystal meth". - http://en.wikipedia.org/wiki/Semi-Charmed_Life