Slang (Southern Californian origin) used to describe the cold, clammy sweat that an abrupt, abnormally large inhalation of high quality marijuana, hashish, or kief will induce, usually out of a glass waterpipe. Kief Sweat is usually accompanied by lightheadedness, rapid heartbeat, flushing, and a hacking cough.
I can't handle that Cali weed, man. That shit makes me kief sweat.
by Ryan Cano November 16, 2007