Definitions by granz

butthash 

Slang for the drug "Jenkem"
Jenkem is the fermentation of raw sewage, the user will then capture and inhale the gas created during the fermentation process.

(Dude 1)~ Dude lets do some Butthash!
(Dude 2)~ Whats Butthash?
(Dude 1)~ We take all our crap and piss and put it in a jar cover it with a balloon, once the balloon is full we suck the air out and get high as shit.
(Dude 2)~ Sweet

butthash by granz November 27, 2007