A dumb-ass, usually male and happens to suffer from S.D.S (Small
Dick Syndrome) in which they must overcompensate with bad jokes
that wreak of the desperate attempts of a guy with a major
inferiority complex... WHEW! Also: Dumb-ass, Fucktard, Nimrod
and Wankmeisters. Inappropriately named children's show
character: If I always make bad mom jokes beat on the sickly kid
and am basically an insecure douche what does that mean kids? A
Skull-Fuck!   SF (skull fuck): You are gay ASF (ANTI skull
fuck): To put it bluntly you godamn inbred half-witted, club
footed, blink 182 loving, music ruining, fucktard!... Fuck
off... by DBbonesMEMBRANE April 10, 2010 Top Definition 1.the
act of grabbing a partner's skull and putting your dick in their
mouth, grabbing their skull and holding it still, therefore
having sex with their skull. 2. a variation of face fuck "As she
was giving me head, she didn't go down deep enough on me, so i
skull fucked her instead." by Razr July 27, 2005 v. The action
of inserting one's erect penis i