Slick knows slick 

When your using this phrase, you're actually telling the person, "You can't run game on me, I been there and done that."
And it's also another way of saying "It takes one to know one."

Slick knows slick, baby. So, don't try to run that bullshit game you got going on.

Slick knows slick by Mr. Terrence L. Trezvant April 24, 2005

she don't know sick'em! 

Southern Ontario rural-ism, meaning, she is dumber than a dog... The longer version of the phrase, which is seldom spoken, is "She don't know sick'em from fetch!"

Did you hear your Aunt Sue, arguing around the table with everyone?! There is something WRONG with that woman! She don't know sick'em!

she don't know sick'em! by Pablo Vertais August 25, 2017

Im so sick of lying you gotta know that 

Naeun from apink in the intro for their song i’m so sick

Person 1 - Im so sick of lying you gotta know that
Person 2 - Ok

Im so sick of lying you gotta know that by Fiftycents January 7, 2023