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The face you make right before you laugh very hard. Your eyebrows will rise and your mouth will drop down.
RoLliE BoY: Dude, build up man
YuNg$HaRkCitY$aVAge: Proceds to build up
Build Up by CY ROLLIE June 9, 2018
When you tell someone nice words that will build them up and make them feel good about themselves
She needed a build up from him but he let her down.
Build up by Bettybad April 6, 2023

Build Up Buster

(noun) The feeling of the build up to a nut being better than the nut itself, due to excessive amounts of masturbation.
“I beat my meat so much yesterday, and I even got myself a build up buster the last time I nutted.”

waxy marital build-up 

Jane's marriage failed due to "waxy marital build-up".
waxy marital build-up by C Angle February 25, 2008

Boulder Build-Up 

Boulder Build-Up is when someone (usually over weight men and women) have dirt and sweat build up under or between cracks in there body from limited exersise and movement. Normally occurs under your arms, between your legs, under your flab (fat) or in more sever cases just in open areas. This dirt build up sometimes falls out in large chunks often named Boulder Build-Up.
Bob: "Oh gee i really need to go to the toilet"
Bob: (mind) ill just lif up my fat and do my buisness.
Bob: "OMG, what is that stuff"
Bob: "I think i have Boulder Build-Up!!!"

sushi build up 

feelin sick due to various takeout containers & uneaten food
Hakeem: feelin sick after gamin all day

Annah: sushi build up?
Hakeem: sushi build up
More from Urban Dictionary
Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".
"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"



Dutty by J Hall April 3, 2003
Word of the Day on October 1, 2026
korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
Word of the Day on September 30, 2026

Slop Grenade

When someone uses AI to generate a large document, slide deck, or piece of code/software and tosses it over the fence for you to deal with.
Chad: Hey Brent I sent you the new backend API change to review, it’s only 100 files changed.

Brent: he just tossed me a slop grenade
Slop Grenade by Joe Squid September 28, 2026
Word of the Day on September 29, 2026
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
After we broke up, he was floxi to me.
floxi by Dr. Geek May 13, 2009
Word of the Day on September 28, 2026
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