cocksucker

from WordNet (r) 3.0 (2006)
cocksucker
    n 1: a person who performs fellatio
    2: insulting terms of address for people who are stupid or
       irritating or ridiculous [syn: {asshole}, {bastard},
       {cocksucker}, {dickhead}, {shit}, {mother fucker},
       {motherfucker}, {prick}, {whoreson}, {son of a bitch}, {SOB}]
    
from The Collaborative International Dictionary of English v.0.48
cocksucker \cock"suck*er\ n.
   a worthless or despicable person; -- intended as disparaging
   and invariably offensive. [vulgar slang]

   Syn: rotter, rat, skunk, stinker, bum, crumb, lowlife, scum
        bag, motherfucker, mother.
        [WordNet 1.5]

   2. a person who performs fellatio.
      [WordNet 1.5]
    

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