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Abbreviation of the phrase “You don’t know what you don’t know”. Phrase coined by Martiros Aghajanyan quickly became popular due to his distinctive tempered pronunciation of it. Quickly gaining popularity in Los Angeles area it is often used to refer to that of what we are unaware or uncertain of. The phrase is similar to Donald Rumsfeld’s quote in it’s literal form “We don’t know, what we don’t know”, but is more synonymous to Charles Dickens's “Never say never”. It is often accompanied with a slightly wiggly upwards movement of the index finger and is predominantly used in a sarcastic context.

Synonyms: You never know, Uncertainly, Never say never, Don’t say “HOP” before you jump (Slovak proverb)

Official homepage of YDKWYDK organization is ydkwydk.org
Narek: Trump will never become the President of US.

Martiros: YDKWYDK! You don’t know what you don’t know! ☝🏻
YDKWYDK by ArmiusXelokius May 29, 2018
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A small piece of information. Derived from the word ken, used often in the scottish language and is synonymous with knowledge.
Person 1: "Hey I don't get this shit. How do you solve this problem?"
Person 2: "I got that one. Give me some kenlets on this assignment and I'll help you w/ that one."
kenlet by Norma Y. October 8, 2005
Word of the Day on July 13, 2026
Related Words

I mean I guess bro

a word of expression to when you give up on comprehending someone's words of ignorance, stupidity, absurdity or are too exhausted to formulate a proper response.

Commonly seen in TikTok comment sections in replies to lazy attempts at humor, overconfidentally incorrect statement, or an over-the-top comment or when someone completely misses the mark on something.
"actually... incorrect statement, hope this helps!"
"I mean I guess bro"
Word of the Day on July 12, 2026

abandonware 

n. software that is no longer sold or supported by the original publisher / developer, often found as free downloads on the internet because it cannot be obtained elsewhere. Not legal, but often seen as morally acceptable because the company that made it is no longer selling the title, nor releasing it as freeware, therefore abandonware is "keeping the game alive", so to speak.
Doom II is not abandonware because id still sells it, while The Incredible Machine is not sold, therefore is abandonware.
abandonware by Spoom October 24, 2003
Word of the Day on July 11, 2026

Foot prisons 

Socks. Annoying, sweat-causing, non-barefoot enducing, everyday socks.
The first thing I do when I take off my shoes, is rip off the foot prisons I had to wear inside them. That's why I prefer flip flops, even in winter!
Foot prisons by Jackalope Hunter December 13, 2022
Word of the Day on July 10, 2026

cornholio 

Ruler of Lake Titicaca. Rumored to have a bunghole that gets very angry if it does not receive toilet paper. Cornholio the Great is often seen walking around with his shirt over his head and his hands in the air, chanting songs about his power, and his bunghole.
"I am Cornholio! You do not want to face the wrath of my bunghole, for I need TP!"
Butthead: Shut up, Beavis! (uh huh huh huh)
Beavis: Um, okay. (heh heh heh heh).
cornholio by AYB July 20, 2003
Word of the Day on July 9, 2026

mickey mousing

In a movie, when the music is syncronized perfectly with the action, just like a mickey mouse cartoon.
Mickey mousing is used in the shower scene of Psycho
Word of the Day on July 8, 2026