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you know what 

The expression ‘you know what’ is when one may say to another to get their attention, in a conversation. One may say this expression several times throughout one conversation to ensure they still have the attention of those participating in the conversation.

‘you know what’ also is when your stating to someone about something there not aware of , or when someone constantly pays them out they use the expression.
Example
Your outfit looks like your going clubbing not to work!
‘you know what’ no one likes you!
you know what by NATASHACAR January 15, 2011
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You know what

Refers to the "Third Leg" or the "Black Whole" between a man/womans legs`
Can i see your you know what?

Imma put a you know what in my mouth
You know what by Organic518 November 22, 2025

You know what?!

Frustrated response to something said. Passionate as well.
You know what?!!!! That ain't even right what you just said!
You know what?! by GloJaz July 8, 2015

you know what else is big 

big dick
a dick that is big
daddy
"you have a big nose"
"yea i do... you know what else is big?"
*looks down*

you know what you doing 

taken from the zero wing dialect (see all your base are belong to us). stands for you know what you are doing, or we're counting on you. Usually achieved by launching all zig for great justice, when we have no chance to survive and are making our time.
"I know what im doing!"
"you know what you doing! launch all zig, for great justice!"

you know what fuck you 

the best way to end a conversation about a conflict or something stupid.
guy1: A tomato is a fruit not a vegetable.
guy2: No its a vegetable!
guy1: No, it's a fruit. see it says that a tomato is in the fruit family in Websters Dictionary!
guy2: You know what fuck you!

You know what they say about guys with big feet

Typically a guy with big feet directly relates to how long their penis is.
Person 1: I have big feet.
Person 2: You know what they say about guys with big feet.
Person 1: Yeah yeah, i have a large penis.
More from Urban Dictionary

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026
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