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You Don't Know Jack 

A: Hey, dude! 34 that on Photoshop.
B: 34?
A: Yeah, make that steamy.
B: Steamy?
A: Dude, you don't know jack about imaging, don't you?

You don't know shit about fuck 

An extreme way to invalidate a person's opinion. It's a hardcore dis meant to bring the person it's directed at to complete silence.
Marven: This war is like fucking awesome yo!
Shanaynay: You don't know shit about fuck,asshole.
Marven:....................well damn.

you don't know dick

You don't know anything. You don't know what you are talking about. Similar to squat and diddley. There is also a board game and a movie called "You Don't Know Dick" but the saying is considerably older.
If you had to look this up, you don't know dick.

Bo, you don't know diddley!  

This is a catch phrase that originated in a TV ad in the late Eighties that featured super athlete extraordinaire Bo Jackson and rock'n'roll pioneer Bo Diddley (he's notorious for his famous box-shaped electric guitar). Basically, the term means that somebody doesn't know doodly squat.
The narrator says:
Bo knows football.
Bo knows baseball.
Bo knows weightlifting.
***********************
In the meantime, Bo Diddley cranks out the notes on his guitar.
Then he says:
Bo, you don't know diddley!

You don't know, you've never been raped 

A response used when one person calls another one out on their bullshit.
"I don't think your life is as bad as you claim."
"You don't know, you've never been raped!"

you don't know me! 

The famous line on Jerry Springer, Maury, etc.
Jerry: Let's bring out the fat and ugly sluts!

*JERRY,JERRY, JERRY!*

Sluts come out screaming, "You don't know me! You don't know me!" while audience is booing with disgust.
you don't know me! by Carlito October 6, 2004