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.

you don't know dick by terrorint March 24, 2016

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!

Bo, you don't know diddley! by I Saw U2 Live Twice October 2, 2007

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, you've never been raped by helrunr January 23, 2019

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

You don’t know nothing bout this 

A phrase used by older people when a younger person shows admiration for something from said old persons era. Commonly used in jest

Grandson: *puts on ray Charles*
Grandmother: oh baby You don’t know nothing bout this!

You don’t know nothing bout this by Therealrealrealll September 29, 2018

You don't know about me 

A vague and mysterious phrase to suggest people don't know something about your character which you have kept a close secret. Just like hiding something in the closet.

Andrew shouted loudly and repeatedly 'You don't know about me! You don't know about me!'

You don't know about me by Flimsco April 5, 2020

you don't know your ass from a hole in the ground 

Figure of meaning that someone doesn't know what they're doing.

You don't know your ass from a hole in the ground.

you don't know your ass from a hole in the ground by Jayrod64* November 25, 2016