narc
1. Someone who rats another out, usually regarding illegal activity. 2. A person who sleeps alot. Thus they are jokingly called "narc", short for narcoleptic: a person with the disease of narcolepsy, who as a result does not have proper control over sleeping/wakefulness.
A: "Yo, B!" B: "zzzzzzZZZZZzzzz" A: "...B's a fucking narc." C: "true."
By Leilani_h