Man-brain

Refers to the way men think in regards to their lack of finesse and attention to detail in general; particularly, though, in socially sensitive ones. Much like using an ax instead of a scalpel to dissect, or a shotgun instead of a sniper riffle to shoot a target.
Anyone exemplifying the man-brain lacks the etiquette to handle delicate or intricate social situations as wells as critical thinking that requires consideration for all the problem's aspects.

When a son tells his mother to move her feet so his girlfriend can sit in an effort to "act more like a gentleman" as the mother has been advising him to do. The son is showing a clear case of man-brain.

by borabora February 25, 2009

brain tree

Someone who is incredibly intelligent.

"You know that girl Claire?"
"Yeah, she's a total brain tree"

by demilovesyou April 11, 2009

Rat Brains

When a man squeezes his balls so that the scrotum bunches up slightly and takes on the appearance, shape, and texture of brains.

Carl pulled his balls out and showed everyone his rat brains.

by Crabkilla2001 January 16, 2009

cum-for-brains

A horny, promiscuous woman of low intelligence.

That slut Jill is good in bed, but she's got cum-for-brains if she thinks that I'm going to marry her.

by ESB43 June 6, 2018

Brain Spam

an unwanted mental image that keeps popping up in your brain

Person 1: "omg there were these two gay guys making out on the couch at this party, and i can't get the image out of my head."
Person 2: "ha, you've got brain spam"

by Jake521825 October 23, 2008

Brain boner

The feeling you get when you are having a lively discussion or listening to an engaging lecture and everything makes sense and it gives you a bunch of new ideas about the topic at hand. The intellectual equivalent of an erection.

DeSean: oh man, that lecture given by Dr. Kobilka about G protein-coupled receptor dynamics gave me a massive brain boner.

Derrick: uhh...right, yeah, totally dude. *pssst* Jimmy, I think we need to re-evaluate our friendship with DeSean...

Jimmy: agreed.

by Longrod Von Hugedong May 26, 2016

Gerber brain

a girl who is especially naive to the ways of the world. a simpleton.

That gerber brain idiot just spilt her drink on my lap.

by P Nutty May 11, 2009