Oh I've done coke as I spent a few years in the bartending/waiter game. It's pretty enjoyable but I can do one or two lines a night as opposed to every 5 minutes like these maniacs like to do.
I can do it once every few years and don't really care because Im not addicted like the must blow lines all weekend and not sleep crowd.
You've done heroin with a needle and a belt ? I'm unable to cross that line. Or give blood