The only times I've done any drugs have been when I did LSD and mushrooms with IRL friends (who are close to Heyurizens in character). Some notable things included:

We tried to play ToeJam & Earl and basically just beatboxed while making our characters dance around the whole time.
We watched a bunch of anime OPs. I looked up one which happened to have German subtitles for some reason and started shouting the lyrics along in a really terrible German accent.
We tried to do some crosswords and other word games. One of the clues was "a Middle Eastern currency" and I just shouted stupid shit like UHH UHHH SAND!!!

Hallucinogens are fun as fuck. I'd love to do them again. But my friend with the plug got on some antidepressants which conflict with psychedelics. And I always felt kind of bad from the hangover of them. I get a terrible headache whenever I do these. He also said that yes, jerking off on these substances is insane. But I never tried that because I'm not a big enough druggie to try to get in contact with a dealer myself.