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Brain. It's when someone is not able to pronaunce "r" correctly.
A: Bwains, bwains!
B: Yo! What are you saying?!
A: Bwains!
B: Aaa, brains! Okay, you obviously have problems with the "r"!
Bwain by GringoStar September 16, 2020
Related Words

Smoove Bwain 

Your brain is so Smoove it can do flips, very intelligent, you are capable to be the most immaculate person in the whole world. If you have a Smoove Bwain you are an intellectual, PERIODT.
"I got such a Smoove Bwain, all these ugly wrinkly bwains can't compare."

"You should see Emily's Smoove Bwain, she got a whole A in her test because of it."

"Being a Wrinkle Brain is such horror, I wish I had a Smoove Bwain like Alex."

stupiy bwain

stupiy bwain by B1g N1g April 26, 2019

Quantum Brain Fart 

When you both remember and cannot remember if you have done something. The state of being unsure if it is a false memory or a factual experience.
Schroedinger to Heisenberg; darn your uncertainty principle, I am having a quantum brain fart trying to remember if I did (or did not) put the cat in the box.
Quantum Brain Fart by Teraknor January 7, 2016

lard brain 

When you eat too much meat at hotpot and the pork fat controls your mind.
Max had lard brain after hotpot, now he's tripping all over the walls.
lard brain by moisttowlettes September 26, 2019

Blaining It

When you totally fuck something up really badly.
"Man I totally Blained it with that date with Sarah"

"I'm gonna Blain this presentation today"

"I am Blaining it right now, talking to you"
Blaining It by Agent South Dakota January 2, 2015
More from Urban Dictionary

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

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
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
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