Top Definition
a word used to denote the use of alcohol when trying to get laid. a conventional jack raises cars so that tires can be changed. a fuckjack (a drink) assists in the spreading of a girls thighs.
i can't score with this chick, so i may have to incorperate the use of a few fuckjacks to loosen her up.
by ken power July 29, 2008
Kind of like fucktard, fuckhead, stupid fucking idiot, only better since without the "retard" of connotation inherent in "fucktard" and not as lame as douchbag/douche, etc.
"How about those fuckjacks (n.) who try to force their entire torso into the subway doors before they close?"

Also, as a verb:

"to describe the action of jacking the subway door open and screwing everybody else. "I totally fuckjacked my way onto the train this morning, and then some dude in a cape took a boot to my sternum."
by pikadar May 18, 2010
A word to define someone for whom the word "jackfuck" does not do his/her true description justice
by Benji December 11, 2004
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