I'm quite a heavy smoker, for one thing--that is, I used to be.

from J.D. Salinger – The Catcher in the Rye (Chap. 1) on Rap Genius

Meaning

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.”

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