know you out 

"know you're lying" in the speak of a chav.

I knows yous got a phone in dere init, i know you out

know you out by kung-fu jesus September 28, 2004

i know you fucked up 

I know you fucked up

I know you fucked up

i know you fucked up by Lala len February 9, 2021

so. you dont know what karlsson is? 

its a meme made by popular game dev Dani. he is popular for his game dev videos but hes different from other game devs. his newest game is MUCK. a rouge like survival game like minecraft.

wishlist my game karlsson on steam.so. you dont know what karlsson is?

so. you dont know what karlsson is? by Milk makes strong bones February 9, 2022

You Dont Know Jack 

This a game that is played online. It gives you 4 letters, for example PLEP. With those four letters you must make it into a witty remark, each word strating with those letters. PLEP could become "people Love Eating Pie" the quickest answer gets 1 vote. Once it is submitted other players vote on it and the one with the most votes wins ( you cant vote for urself)

Cam is good at playing "You Dont Know Jack" he always get a vote, he thinks quick.

You Dont Know Jack by pink_elephant January 12, 2007

You Already Know 

A response to a quite obvious answerable question. A term used in derogatory sense to make an answer more bold and concrete.
Commonly used as a sexual response.

Guy 1: You guys back at the hotel room?

Guy 2: Yes sir!

Guy 1: Time for some fun?

Guy 2: You Already Know.

Guy 1: 🏏🏏🏏

You Already Know by MasterGoatEgg August 8, 2022

I know you are but what am I 

The gen z way of saying haha bitch I won the argument

It is literally the worst comeback of all mankind

You are dumb

I know you are but what am I

I know you are but what am I by 42069ultimateholdersex April 1, 2021

You Must Know Something I Don't 

When someone says something outlandish, this is a common response.

Calvin: My head is all swollen, so I'll wrap it in a turban so my parents won't notice!
Hobbes: You must know something I don't.

You Must Know Something I Don't by MalumLibrum958 January 10, 2023