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.