An abbreviation of "Queens Under Extreme Enemy Fire" (Q.U.E.E.F.). Queef is a term for a very popular young woman in the high school population who has been taken down by nerds that are bearing firearms, or sticks of burning wood.
A wet flappy fart noise that is emmitted from the pus when air is brought into it. It usually creates a sloppy "ppppfffftttt" noise followed by a wet fart and the rapid flapping of pussy lips. Sometimes white chunks of seman have been known to fly out of my friends vagina.