When a person is so annoying that they get you really mad and the only way to stop them doing what they are doing is to give them a single powerful punch to the face which knocks them unconscious, they are now said to be "knocked the fuck out". This is only achieved if it is a single punch which knocks them unconscious.
"Brad was talking so I knocked him the fuck out!"
by PotatoChip May 23, 2003
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The phrase commonly used on friday movies when someone gets their ass kicked.
by John Spartan November 22, 2003
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One who gets knocked the fuck out. This is commonly happening to a person in Gainesville, FL USA called Joe Mullett.
Joe Mullett really got knocked the fuck out at the party. The guy hit him and he lost 3 teeth and broke his nose!!!11

by Erik August 8, 2004
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When you punch someone so hard, they acheive a level of unconsciousness that only fags are worthy of reaching.
That bitch who tried to steal my car? I chased him down the street and punched him in the face, then his head hit the brick wall and he dropped. Now THAT'S knocked the fuck out!
by Zenhachirou May 29, 2003
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1. To fall asleep
2. To pass out
1. I was so tired that when I got home I knocked the fuck out.
2. -Have you seen Jeff?
-Yeah he's knocked the fuck out on the couch.
by pete5 February 2, 2007
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When someone gets punched really hard and they hit the floor. You go up to them and say "You got knocked the fuck out."
*Boy gets punched and hits ground*

Person: "You got knocked the Fuck Out".
by Alexis Hamilton August 6, 2007
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Knock the fuck out, a term used mainly when someone gets punched in the face, thereby resulting in a minor (or major) concussion or simply broken/bloody nose.
Nearly any sort of head-trauma, so long as it's very painful, is considered 'getting' knock the fuck out. You never use 'knock the fuck out' with an 'ed' at the end, because it ruins the point of the gangstuh-speak. Honestly, don't add the 'ed' or you get knock the fuck out.
Me: You better get me my weed by Monday.
John: Or what?
(That Monday)
Me: Bitch you got my shit?
John: No, bitch.
Me: (Punches John in the face.)
Innocent bystander: Oh shit! You just got knock the fuck out!
by Nyiddle May 24, 2006
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