jerk-off

from WordNet (r) 3.0 (2006)

jerk-off
    n 1: terms of abuse for a masturbator [syn: {tosser}, {jerk-
         off}, {wanker}]

from The Collaborative International Dictionary of English v.0.48

jerkoff \jerk"off\, a.
   A lazy, foolish, stupid, or otherwise contemptible person; --
   an offensive and disparaging term. [vulgar slang]

   Syn: jerk.
        [PJC]