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To swear on a person you hold in high regard. Usually a deceased friend or relative.
Friend 1: "I already fucked Bob"
Friend 2: "You wellin, On who??"
on who by Dmula July 12, 2015
Word of the Day on July 20, 2015
Words you can keep

Skrt skrt on who Heeseung and giselle 🧐 

It’s a group of people who talk about everything and laugh about everything sometimes they will talk about serious things but mostly abt fun things. They talk almost everyday.
“My friend group is skrt skrt on who heeseung and Giselle 🧐 it’s where you laugh about everything

Depends on who you ask. 

The response you get when you ask someone is they're single. Typically what this means is that they sleep around a lot but don't want to say they do.
"Erin thinks she's so smart when she said it depends on who you ask. Everyone knows she's a whore."

"Dan said depends on who you ask so he can try to sleep with you. Everyone knows he has a girlfriend."
Depends on who you ask. by Danny Rand September 7, 2018

who on dat bus 

When you see a yellow school bus you scream "WHO ON DAT BUS" like a black man.
Paulina: WHO ON DAT BUS?!
Leeana: your mother.
who on dat bus by Georgw April 5, 2011

Who on earth cares? 

When someone really doesn't care what you're talking about, so they decide to not listen AT ALL WHATSOEVER, THEN THEY SAY, "Who on earth cares?" and then just stomp away.
"Hey, do you know what a magnetic field is?"
"Who on earth cares?!?!" *Stomps away*

Who's on first? 

Just about the greatest comedy routine ever, by comedians Abbot and Costello, with Abott telling Costello the names of the players.

In this context, the first baseman is named "Who"; thus, the utterance "Who's on first" is ambiguous between the question ("which person is the first baseman?") and the answer ("Who is the name of the first baseman.").
"Costello: Whats the guy's name on first base?
Abott:What is the guy's name on second base
Costello: Im not asking you Who's on second!
Abott: Who's on first!
Costello: I dont know!
Abott: He's on third, we are not talking about him."

"That Who's on first? Routine always makes me lol"
Who's on first? by AJ Molina February 23, 2009

Who's on deck? 

It means "who is selling weed"
I need some marijuana, who's on deck?
Who's on deck? by Bat woman August 26, 2015
More from Urban Dictionary
Acronym, meaning Too Long Didn't Understand
Similar to TLDR
Sister: This meeting was to discuss the rough draft of my essay, where we discussed the subsidiary questions I added in my rough draft. We also discussed the relationship between my main title and the real-life situations I chose to use in my essay. We discussed the structure of my essay as well, specifically the Math AOK section and how it relates to the contradiction of the title. This second meeting was particularly helpful in discussing the implications of my essay claims and how to apply the title across various areas of knowledge. There were many sections of the essay that could have been cut down in wordiness and the ways of knowing required further and more in-depth analysis.

Me: Woah! TLDU!
TLDU by L-Evans January 14, 2019
Word of the Day on August 30, 2026
the act of having anonymous sexual encounters with other men in public toilets.
Cottaging by greeef April 24, 2003
Word of the Day on August 29, 2026

Salad Days 

green inexperienced youthful judgement and cold blooded execution of those judgements.

Rashness with little concern of consequence.

Antony and Cleopatra. William Shakespeare

"My salad days,
When I was green in judgment, cold in blood."

- William Shakespeare, Antony and Cleopatra, 1.5
"How did you end up in jail?"

"Salad days, 'nuf said."
Salad Days by GilbyRFC0 October 7, 2011
Word of the Day on August 28, 2026

age gate 

An absolutely foolproof way to keep minors from viewing content deemed "too mature" for them to watch.
Billy: "So I was trying to watch some videos for an M rated game, and I ran into an age gate, so I put in my real birthday. SOMEHOW it managed to figure out that I am 12. CURSE YOU AGE GATE!!!"

Bill: "Fucking age gate! *quick scroll* THERE! I was born on January 1, 1904. Fuck you age gate."
age gate by Banja January 7, 2011
Word of the Day on August 27, 2026

board chow 

A)
The Crud that collects under the keys in a keyboard. Usually more severe in the keyboards of programmers and webmasters as they tend to spend a lot of time at the the computer and thus eat at their desk. Mainly affecting IBM Model M (clicly) style boards.

B)
Can also be used to gross out Non-Techie people
A)
Bill: want to go to the club?
Bob: No, I've got to clean out my board chow, keys are starting to stick.

B)
Bill: Want to go out to get a bite?
Bob: No, i am just going to have some of my board chow/
Bill: Whats' that?
Bob: The food scraps that collect in my keyboard; Want some?
Bill: *GAG* *HURL* *GAG*
board chow by BinaryHackerMan September 3, 2007
Word of the Day on August 26, 2026

young pup 

a young person, a young adult in their late teens/early 20s.
Ah, you're just a young pup at 23!
young pup by the dog May 30, 2006
Word of the Day on August 25, 2026
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