A fork of Rural Dictionary
A side effect of the Burn In drink. It increases serotonin and endorphins to the point where the user will grin uncontrollably, yet they will feel no pain, on account of the serotonin and endorphins. It starts from a regular smile, to one from ear-to-ear, which then wraps around the user's face, tearing their face muscles.
This does not occur if Burn In was used in moderation.
LARRY, STOP DRINKING THAT, YOU'RE GOING TO GET LARPLE!