One time a guy i know asked me for some MDPV. He's an idiot and would end up taking way to much and do something stupid, especially considering MDPV's potency so i decided to cut it with some caffeine. However before doing so i wanted to make sure it would melt on a foil in case he would try to smoke it so i tried it and sure enough it did. It had a strange scent though and i'm not sure if it was active because i didn't breath the vapors in myself.
"When choosing between two evils, I always like to try the one I've never tried before."
In memory of TOTSE.com
Pure caffeine should be able to induce a buzz. I read some Erowid reports -- it does seem to work. Theoretically it should work, as caffeine boils at 178 degrees Celsius. I would expect onset to be faster and duration to be shorter. It's also possible that vaporization circumvents some metabolism in the liver. I went through a phase when I was fiending for caffeine. Used to smoke coffee out of a glass piece. Totally fucked up a pretty nice piece, but the caffeine gives a nice buzz, kind of hyper and mildly euphoric. Lasts for only about 15 minutes though.