I'm quite a heavy smoker, for one thing--that is, I used to be.
Like the late non-sequitur master Mitch Hedberg once said (Hedberg unfortunately died in 2005 of heroine and cocaine amplifying a heart defect):
“I used to do drugs. I still do, but I used to, too.”
To help improve the meaning of these lyrics, visit "The Catcher in the Rye (Chap. 1)" by J.D. Salinger and leave a comment on the lyrics box