I dunno if you got that far into the song rumby, but
"Don't you think I know what I'm doing?
Don't tell me that I'm doing it wrong.
You're the one who's really the loser
This is where I feel I belong
HA!"
I've always found that verse really strange. Despite the fact that the song presents a negative image of cocaine use, you have a verse in the middle that gets all defensive about it. It could be criticism of someone who holds that position, but it doesn't really feel like it to me.