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Interjection. Not the same at "what's up" which is interrogative.

Whatup is a public request for recognition. It can be used to loudly declare one's success, something akin to "whatnowmothafucka!" (also not a question). Or it can be used as a subdued call for acknowledgement, something like "I told you so".
Example 1

*At the roulette table*
P: "It's gonna be red"
Q: "I don't know man"
*It's red*
P: "WHATUP!"

Example 2

Q: "By the way man, you called it. They broke up."
P: "whatup."
whatup by yunevor May 2, 2023

whatup wednesday 

an intimate gathering of friends and strangers that takes place on a wednesday night and generally involves a fair amount of alcohol in a small dorm room. originally created by 4 south-campus ucla students who needed an alternative to the normal thursday outing.

whatup wednesdays have been evolving, including a theme song, an official shirt that is worn on wednesdays, a constitution, and more. the goal of WW is to be recognized as another day to celebrate during the rough and tough of college life.
Guy 1: Dude did you hear about whats going on today?
Guy 2: Isn't it only wednesday?
Guy 1: No its WHATUP WEDNESDAY!

WhatUp Phunk Band 

An impossibly GAY band that no one likes.
WhatUp Phunk Band by idontknow November 8, 2003

boy what up 

a phrase used to greet other people. orig. by @kermit_nofrog
"Boy what up!!! I ain't seen you in a hot minute!!! We going hard at Club Vegas VIP tonight!!!"
boy what up by @CLUB_VEGAS_VIP December 23, 2011

so what up then

phrase indicating you would like to begin to fight a person
person 1: yeah whatever; you talk mad shit
person 2: SO WHAT UP THEN !?
person 1: SO WHAT UPPPPP !
so what up then by krisskidddd September 10, 2009

WhatPulse 

WhatPulse is a key counting program which monitors the number of keystrokes, mouse clicks and more recently the distance the mouse moves (this can be viewed in both metric and imperial (miles, kilometers, and meters)), that a person makes over a period of time. The program is not spy-ware, as it does not record the specific keystrokes, programs that do record specific keystrokes are called "key loggers". WhatPulse has a website where you can register, download, and view your stats or somebody else's stats, you can join groups and view rankings in the high-scores. Website: www.WhatPulse.org
Dude, I just got 50k KeyStrokes on my whatpulse account! That puts my team onto the top 30!
WhatPulse by Kornerius January 11, 2009
More from Urban Dictionary

Oblication 

A vacation, feeling more like an obligation, that involves visiting or staying with family.
So Joe where are you taking the kids for spring break vacation? We are going on an oblication to Boca to visit my mother-in-law.
Oblication by kimmerr May 5, 2011
Word of the Day on October 25, 2026

Surf Dracula Syndrome 

A phenomenon in film/television series, most notably streaming series, where the main premise is drawn out to such a point that it takes an entire season or more to get the parts of the series the audience is actually interested in seeing.

For example, if a series is titled "Surf Dracula," a majority of viewers would tune in expecting to see Dracula surfing by the first or second episode. However, the entire first season would instead be tedious padding and backstory before finally ending with Dracula surfing in the last five minutes of the season finale.
I watched "Smallville" on Netflix the other day. Dude, it was ten seasons of filler before he finally flew! Major Surf Dracula Syndrome!
Word of the Day on October 24, 2026

Northstarring

Finding your way back to the truth by fixing on one verified fact and working out from there, the way you navigate by the North Star when everything around you is spinning.
Rumours were flying everywhere, so she went northstarring — one checked fact at a time.
Northstarring by Light Bearer October 22, 2026
Word of the Day on October 23, 2026

Plate of Brown 

A plate of brown consists of foods that have little to no nutritional value, and are typically deep fried. A true plate of brown will also be accompanied by a dark soda.
Wanna go to meal hall & grab a plate of brown?
Plate of Brown by Cheddar Craigson September 18, 2020
Word of the Day on October 22, 2026

Larpenomics

When finance content creators rent out fancy cars and flex cash to seem richer than they really are in order to promote and sell their “get rich quick” courses.
Andrew Tate has mastered the field of larpenomics
Larpenomics by Rbois09 October 21, 2026
Word of the Day on October 21, 2026
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