A fun game in which the participant stands outside a closed door where someone is sleeping. The player pulls out his penis and begins to masturbate. He must stand close enough to the door so his hand knocks on the door as he masturbates. The aim of this fun game is to get off before the sleeping occupants wake up and come to see what all the noise is. While the player technically loses if the occupant comes out of the room too early, the player may be able to get sex out of the occupant should it be an attractive female.
Guy 1: Dude I'm bored. What can we do?
Guy 2: Well we could always play knock knock.
Guy 1: Alright but this time I'm not going to my mom's door.
Guy 2: Fair enough.
by oh tee gee May 15, 2008
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slang for Jehova's Witnesses. Due to the fact that they come knocking on your door almost every damn saturday morning when ur trying to watch cartoons or eat breakfast. They feel compelled to interrupt your important free weekend morning by telling you about how god loves you and such.
I was beating off to some ill ass porn, then the knock-knocks came callin and I had to put the beef away. I got pissed, drew a pentagram on my forehead and answered with a massive boner, informing them that I had found solice in satan and blasphemy. I asked them if I could get back to having sex with this downs syndrome girl I had picked up at the bus stop. They haven't been back since.
by Destructive Criticism April 28, 2005
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"Knock. Knock." Is a term used primarily by hackers and they send them to their victims who they are about to swat usualy on Twitter or private message.
Knock. Knock.
by Sock pen October 1, 2016
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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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So … chat with Xwifey

Said you were waiting

I said she does that a lot usually at windows

Your not my twin flame

Your my fucking stalker

Just like twin flame

Has one of her own

You didn’t mention UD

You didn’t mention working man’s Kath

But we both know and now she does that you read this daily too

Hanging on every word

Hanging out the roof top window

Fuck off staring or it will continue to …

Oh shit I vape mostly now

Lifestyle choice …

Bit like yours being rather fucking creepy ..

Add this to your badge of honours …

I wonder if my neighbours doorbell picked all that up …

Stalker boy was probably jerking it somewhere or other …

And this is my energetic record … you know my beliefs …
Knock knock ..

The Goliath comment was just for you

Nostra Damn us ..
by LetsTalkAboutX January 11, 2023
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when you go around knocking on every door you can find and when you open it you have to say

Knock-knock-knockin' on heaven's door
Knock-knock-knockin' on heaven's door
Knock-knock-knockin' on heaven's door
Knock-knock-knockin' on heaven's door, eh yeah
WOW you knock knock knocking on every door
by myrealnameisjeffandpeopleyas November 15, 2017
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A sensual nickname of the human breasts
"hey babe" you know who had some great tits? Tiffany! yeah she had some great knock-knocks
by knockey knocker August 28, 2020
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