A saying from England that means to knock on your door. If your related to somebody from england, tell them that and see what they say.
English Man: Can I knock you up? American Lady: NO! YOU CREEP
by Badasscrackermotherfucker August 21, 2011
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1. After beating the shit out of someone you insert that phrase.
2. Random word that you enter in anywhere
3. A nuts T-shirt sold a buttigroove campaigning for barack
1. Man 1: Beat the shit out of a nigga Man 2 : On ground. Man 1: Ya wassup niggah OBAMA SAID KNOCK YOU OUT!

2. Man 1: Dude my girlfriend gave me a BJ! Man 2: NO way... OBAMA SAID KNOCK YOU OUT!

3. Hey look at this nuts shirt i bought.... man2: Woah OBAMA SAID KNOCK YOU OUT
by OBAMA SAID KNOCK YOU OUT April 4, 2008
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Gerard way in an interveiw was telling a story once about a guy in a crack house (I think) and the guy said this to him
some mcr fans (aka killjoys) may say this at times when someone says these things:
A:(normal sentence containing the words "you better")
killjoy: YOU BETTER STAY ON THAT SIDE OF THE STREET MF I'LL KNOCK YOU OUT!
OR
A: (normal sentence containing the words "that side of the street" or "that side/street")
killjoy:YOU BETTER STAY ON THAT SIDE OF THE STREET MF I'LL KNOCK YOU OUT!
A: and i was like, "bro stop stay on that side of the street! I need to catch up"
Killjoy: YOU BETTER STAY ON THAT SIDE OF THE STREET MOTHERFUCKER I'LL KNOCK YOU OUT!
by gerards_way March 6, 2021
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I’m going to beat you fight you or I’m going to damage you
Shut up before I have to knock you off the mat 🚶 ♀️
by Keleajx October 19, 2017
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This sentence can is used as a joke, it can be used everywhere when you want to bully someone, you can also use this to joke around with your friends.
Friend: Did you really just threatened me now?
Me: Calm down before you get knocked down.
Friend: damn, ok ok i'm sorry
by Invalyd January 13, 2019
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