Stands for "Ceiling Fan Man." Origin comes from someone who made up an elaborate story about having two brothers who died, one of which hung himself from a ceiling fan.
Morgan: "What a fucking C.F.M."
Wife: CFM? Whats that honey?
Man: Centrifuged modular you dumb cunt. I was looking at that truck over there.
Someone whom is so brain dead that they cant be in public without doing something stupid or pissing someone off.
Person 2- ''Kyle is a CFM.''