oh, you know 

when somebody is caught cranking their hog and is embarrassed .

mom: steve, what are you doing?! that's gross
steve: oh you know
because steve was embarrassed he didn't want to admit so he said oh, you know

oh, you know by zackthecoolguyfromyourmom March 29, 2022

oh you know 

can be used to answer any questions somebody asks. does not matter what the question is.

doctor: do u have any history of diseases in your family
Patient: Oh you know

oh you know by matts a pothead February 19, 2009

Oh you know 

When a person just knows

DATBOI: man where is that chainsaw been looking for it all game

"Bottom left hand corner of the map" oh you know is it !

Oh you know by The Cringe Club July 27, 2016

Oh you know what 

A colloquial phrase predominantly used by the millennial and hipster crowd, referring to an underlying, shared, or assumed understanding between the speaker and the listener. It's used to announce that the speaker had a realization on a previous subject.

Tristan: "oh you know what"
Tristan: "I think I know why"
Tristan: "yup we're good"

Oh you know what by Amesbury Company July 24, 2023

oh you know 

Something scene kids say. I'm not sure why, but they do. Often used to be promiscuous about where they stashed their bandanas or something.

"Have you ever spent the night at his house?"
"Oh you know."

-OR-

"Which bandana did you buy?"
Oh you know.

oh you know by tBQ November 4, 2006

oh you know 

is like a filler and can be placed instead of words such as "mhm" "yup", and can basically be a reply to anything.

-"Wow you are so cool!"
-"oh you know"

-"Damn you pulled an all-nighter before the exam?"
-"oh you know"

oh you know by Coolpersonforever April 28, 2009

Oh so you dont know what karlson is? 

KARLSON IS JUST A LITTLE GAME IM WORKING OM WISHLIST IT NOW ON STEAM GAMERS

Dani: Oh so you dont know what karlson is? KARLSON IS JUST A LITTLE GAME IM WORKING OM WISHLIST IT NOW ON STEAM BONERS

Oh so you dont know what karlson is? by EPICKARLSONGAMER June 18, 2021