"That's lighter fluid," he says. "I used metallic crayons to give it that lighter fluid feeling. That's computer duster. If you don't do it right, it can freeze and shatter your teeth. That's crystal meth. That painting's probably the seventh or eighth on the same piece of paper, because I kept doing it over and over again. I couldn't stop. That's marijuana…"If you don't do it right, it can freeze and shatter your teeth. Holy lord.
Anyway... here are the drawings, self-portraits done on drugs.
For comparison: Here's a series of portraits done in the course of a U.S. government experiment with LSD (back in the 1950s). 85 minutes into it, the artist was all "'I can see you clearly, so clearly. This... you... it's all ... I'm having a little trouble controlling this pencil. It seems to want to keep going.
I got to that last link via "3 Myths And 8 True Stories About LSD." Apparently, "The US Government Gave Artists LSD To See How It Would Affect Their Work."