Term used by the BSP crew when refering to anything negative. Mainly used when no other term will suffice.
God damned fucking mother-fucking knock-knock as fucking knock-knockhead
by gesis March 22, 2003
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Something your family can’t do before they enter your room
*mother barges in bedroom whilst you’re in the middle of having sex*
You:”Holy shit mum, every heard of knocking
by elv14 October 27, 2020
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Punching a Door until it opens
* Invention of Knocking *:

"I'LL PUNCH YOUR DOOR UNTIL YOU OPEN!"
Person: * Opens * Greetings!
by 7Macros February 22, 2021
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an insult or a threat that one tells to someone else. once the person who replies with "who's there?" the ejoke abruptly ends with the answer "fuck off" many opther endings can be used to make this insult more interesting or more focused on the insultee.
"hey, knock knock"
"who's there?"
"fuck off!!!"

"hey knock knock"
"who's there"
"a fuckin dick thats about to get their ass kicked"
by Ratbiker May 24, 2007
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When someone knocks and then opens the door, defeating the whole purpose of knocking first.
Guy: Dude, my mom tries to justify her barging in saying she knocked, but all she did was knock in. One of these days she's gonna catch me.
by TheMagicalHobo August 3, 2008
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Something that occurs when combustion of some of the air/fuel mixture in the cylinder does not result from propagation of the flame front ignited by the spark plug, but one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front.
Modern cars are prone to low-speed knocking
by Sir. B October 24, 2020
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when you just don't care what the hell some one is saying.
Deminstrate this by knocking on an object twice and saying knock knock.
" Knock, Knock"
" Whos there?"
" I don't care"
by vicky March 6, 2005
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