1. A comeback to any negative statement. Similar to "I know you are but what am I", but used by adults. Said loudly and in a playful manner.

2. A response to anything a person says if you're trying to annoy them.
by T34418L31 May 16, 2006
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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
by matts a pothead February 19, 2009
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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 !
by The Cringe Club July 27, 2016
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By far and beyond, the most commonly used Tomism (see "Tomism"). The phrase has it's origins when Tom was using his very last respirator mask while baling hay and took it off for lunch break. Chris quietly put a lump of horse shit in the middle of the mask. When Tom got up to put it back on, he stared at it for a few seconds, his face got red and he did a slow motion turn to Chris saying, "OHHHH... you MOTHER!!!" Since this event, it has become his signature phrase.
After saying, "OH you MOTHER", he proceeded to chase Chris around the barn, tackle him and perform Malaysian Chest Implosion Torture on him for revenge.
by Frank Klaune November 24, 2004
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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.
by tBQ November 03, 2006
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what annoying girls scream everytime someone does something stupid or funny.
girl: OH YOU GO JAY!

girl: OH YOU GO STEVE!

girl: OH YOU GO TEE!

(repeat at least 20 other times in one day.)
by omg. May 14, 2008
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