“Who bit his lip?”
From this anti-drug web site:
Signs and Symptoms of Cocaine Use:
Do you think you see signs of drug use but you are not sure what drug is being used or how bad it is? …
A crack user may have burns on lips and fingers as a sign of cocaine use, because of burns from the crack pipes.
When high doses are used or the drug is used in binges, symptoms of cocaine use often include disorientation, delusions, paranoia, and antisocial behavior.”
http://www.narconon.org/drug-abuse/signs-symptoms-cocaine-use.html
it looks more like what happens when one trips and falls and hits their face on the floor. as when one is very drunk or high on drugs.