n. 1. A person who is deemed to be worthless or despicable; -- obscene and highly offensive. [ vulgar slang ] Syn. -- rotter, rat, skunk, stinker, bum, crumb, lowlife, scum bag, cocksucker, mother. [ WordNet 1.5 ]
2. Any object viewed as annoying or frustrating; -- usually used as an expression of anger. [ vulgar slang ] [ PJC ]