Fucking the crack of the ass by sliding one's dick inbetween the cheeks parallel with the back, in the same manor as Tit Fucking.
by Turboblazer January 03, 2008
Crackfuck is the joining of Crackhead with fucktard, producing "Crackfuck." It is popular because of the alliteration of the hard k sound in Cra, ack, uck.
1. Avril Lavigne is a crackfuck.
by JIMMEH May 15, 2003
While Alexia and Jon were working out their marriage difficulty, the local crackfuck, Crystal, tried stealing him by screwing him.
by Alexia January 31, 2005
by t8sty-salad December 24, 2008