fuckhead

from WordNet (r) 3.0 (2006)
fuckhead
    n 1: a stupid person; these words are used to express a low
         opinion of someone's intelligence [syn: {dunce},
         {dunderhead}, {numskull}, {blockhead}, {bonehead},
         {lunkhead}, {hammerhead}, {knucklehead}, {loggerhead},
         {muttonhead}, {shithead}, {dumbass}, {fuckhead}]
    
from The Collaborative International Dictionary of English v.0.48
fuckhead \fuckhead\ n.
   1. a stupid person; -- disparaging and vulgar. [disparaging,
      vulgar slang]

   Syn: dunce, dunderhead, numskull, blockhead, bonehead,
        lunkhead, hammerhead, knucklehead, loggerhead,
        muttonhead, shithead.
        [WordNet 1.5]
    

[email protected]