An unpleasant feeling some people infrequently experience when taking a drag of marijuana. Some report it as their brain exploding, or swelling of their heart combined with anxiety. It's only temporary and goes away after a few seconds.
by Purantsu January 16, 2017
The bad feeling that you have several hours(days) after taking amphetamines(Speed), MDMA(Ecstasy), etc.
by WoWSura July 27, 2011