First time I did ketamine I fell off the side of the universe and into its machinery as it was driving away from me and was crushed and smeared into slime. After an eternity of nonexistence I evolved into primordial soup, and slowly evolved back from slime into a vertebrate and eventually back into an ape, as I was evolving back I slowly regained control of my voice, and I went from making sloppy wet goop noises to monkey-like caveman grunts which finally became human words again. That’s when I realized I was alive again and I cried with joy even though I had been vomiting the entire time. Whole thing apparently lasted like 40 minutes. I swore I’d never do it again.
Spoiler: I still do it. It’s awesome.