You know what they say 

The start of an old meme that originated from the CD-I game “Hotel Mario”.

Mario: “You know what they say, all toasters, toast, toast.”

You know what they say by The Urban Dictionary 2.0 January 20, 2020

You know what they say 

A phrase one would yell out when wishing to pressure a certain individual into entirely consuming their alcoholic beverage/s.

They say "Bottoms up" or "Scull, scull, scull" or "Drink up" or "Don't be a little bitch".
They = party gurls

Come on! B You know what they say! Don't be a little bitch.

You know what they say by makeamove October 10, 2018

As they say 

What an older person says, right after they quote some hip slang that the younger kids started using.

Yea that party was LIT! As they say.
I took that girl home and CLAPPED SOME CHEEKS, as they say.

As they say by Osmotic February 4, 2021

you know what they say about nickels and strange occurences

This is a phrase based on the iconic Doofenshmirtz phrase, "Wow, if I had a nickel for the every time I was doomed by a puppet, I'd have two nickels. Which isn't a lot, but it's weird that it happened twice, right?" The phrase is not only a shortening of the phrase, but makes it easy to add to a conversation without jumpcutting to "haha funny reference".

Dude, this girl fell in love with me, dumped me, forgot she dated me, fell in love with me again, and dumped me AGAIN! Sigh, you know what they say about nickels and strange occurences...

you know what they say about nickels and strange occurences by Nurfgal December 16, 2025

I dont rly care bout what they say 

imma come back like a boomerang

I dont rly care bout what they say imma come back like a boomerang

I dont rly care bout what they say by GabbieStan21 December 14, 2018

That’s what they all say 

The term is used for when someone says something that is a commonly used phrase.

Boy: “I’m sorry I can’t hangout I have to do my homework”

Other boy: “That’s what they all say!”

That’s what they all say by Nephele April 21, 2019

People who say they look bad to get the other person annoyed and earn a free compliment

YOU KNOW WHO YOUSE ARE
going out there

I see u

Well not really BUT! its true

People who say they look bad to get the other person annoyed and earn a free compliment Example
Girl "I look terrible"
Boy " No you dont"

People who say they look bad to get the other person annoyed and earn a free compliment by StephenFuckedItUp(AGAIN) October 31, 2022