brain afterbirth

A loose measurement of how stupid, ridiculous, or retarded something is.

That kid has too much brain afterbirth.

The amount of brain afterbirth in that video was astounding.

by Zebora September 21, 2017

Grug Brain

Someone who has a very primitive thought process

Homo Sapien 1: "OOOOO fire look so cool."
Homo sapien 2: "You're such a Grug Brain."

by crazyfortniteman October 31, 2021

Pickleball Brains

Someone who thinks and/or acts small and/or stupid in everyday life.

Look at where you are going Pickleball Brains, you almost hit that pedestrian

by jondich February 26, 2021

Boner Brain

The phenomenon when a males mind becomes filled with extremely sexual thoughts when one has a boner. In other words a person thinks with their boner.

I had a serious case of boner brain in class and almost spunked my pants thinking of fucking Ms. Williams

by TadBitOfThad May 11, 2015

brain fart

momentary mental lapse as when you see someone familiar but forgot their name the instant you were going to say hello

Lover 1 Susan: Oh John that was sooo good!

Lover 2 John: Ohhh yeah, uh, rats I just had a brain fart. Damn what's your name again?

by no1sandman August 1, 2010

Penis Brain

A person who thinks with there penis.

A guy who just wants to have sex.

A man who is horny all of the time.

A guy that thinks only with his penis and of his penis.

A man who believes everything in life can be in some way relative to the human penis.

A man who uses his penis to hide the fact that he has no skills in getting women.

"My ex boyfriend was such a penis brain, all he cared about was sex"

"Why do you always have to be such a penis brain? All you think about is your penis!"

by Suckmycockerspanielbitch69 October 7, 2008

Brain broke

When you're so mentally overwhelmed at the moment that no new information can get in and no intelligent words can get out. Like drawing a blank except you can't even recognize the question. Not to be confused with being medically confused.

(Tanya sees Max reading about the current administration when he drops his spoon)
Tanya: Is everything okay, Max?
Max: (Looking at her with pained confused face)...waskingle?
Tanya: It's so bad it's got you brain broke? What did they DO?!!!

by Stormis_Avalon June 29, 2018