To be confused; baffled
"What the fack?"
by Andrew December 28, 2003
Synonymous with the word 'fuck.' Notably used in cases where the writer does not know (American) English well and in attempt to sound out the word while applying his known letter/pronunciation set results in a slightly mangled but understandable version of the word.
Example at, where some silly Japanese bastard decided to spraypaint profanities on the wall yet failed in his (American) English spelling:
Fack You Man

(alternately pronounced as 'fack', similar to the word 'fact', to those who find such objects of Japanese word scrambling humorous and to explicitly specify that you are not saying the word 'fuck', but rather the word 'fack')
by Stimar May 07, 2003
for a woman to stick her finger up your ass after sex.
shit, that girl just facked me.
by fack-a-holic! June 30, 2009
1) how a British person says fuck.

2) how to type the word fuck on chat sites and not get in trouble for it.

3) to shove a gerbil in your ass through a tube.

4) how girls ussually say fuck

1) British guy playing XBox- "ah you fackin American you shot me to bloody hell! Fack it's tea time gotta go chaps.

2) a kid playing club penguin -" fuck!!"

Moderator- "you have now been ban for 30 days"

Player 2- he shud have just types fack.

3) haven't you ever heard the eminem song FACK

4) Girl- OMG what the fack is up with you today Josh?

Josh- you mean fuck?

Girl- that's what I fackin said like seriousely!
by Ihearteminem January 23, 2010
A prolonged way of saying "fuck" when you are busted in an awkward/uncomfortable situation.
Timmy: "Chaz shit his pants yesterday."

Shelly: "He's sitting right behind you..."

Timmy: "Fack..."
by Mere Scraps August 02, 2009
The FACK algorithm is based on first principles of congestion control and is designed to be used with the proposed TCP SACK options. By decoupling congestion control from other algorithms such as data recovery, it attains more precise control over the data flow in the network.
"FACK my network, please"
by Serafim February 07, 2007
This is the word used by eminem to use in a sentence where you cant say fuck.
Lawyer: Did you kill him?
Tommy: Narr i didnt facking kill him mother facker.
by Sugar thug November 06, 2009
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