by weaponised_autism July 14, 2019

The muscle tension in the face that usually ends up with the jaw and tongue rolling and teeth grinding as a result of amphetamines.
by Nekromekanik May 24, 2005

The uncontrollable mouth movement caused by certain drugs. without the aid of chewing gum can result in serious interior mouth damage.
by rooney425 June 29, 2008

by fluff ball September 02, 2003

by butt face fred October 29, 2007

The act of ones jaw vibrating, clenching or protruding. This happens whilst under the influence of various drugs such as MDMA, Ecstasy, Speed etc. The morning after gurning all evening is very painful, and this is how people ruin their teeth on drugs.
The person who is under the influence usually chews on gum to stop themselves clenching or to stop their constant chomping on their bare teeth.
Too much gurning can lock-up your jaw in which it cannot move at all.
The person who is under the influence usually chews on gum to stop themselves clenching or to stop their constant chomping on their bare teeth.
Too much gurning can lock-up your jaw in which it cannot move at all.
by Crumpits March 30, 2009
