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

booby brain

a man whos brain and decisions are controlled by boobies , some1 who is not happy unless they are getting new boobie

he could not finish college or go to work on time cause he has booby brain

by junk meet November 4, 2013

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

Brain Slurp

This is a common word to explain when a male massages the scalp of a female that he is attracted to or friends with. This method is usually only done with one hand and executed in a social gathering.

Tim: Dude that girl is so hot

Bob: Yeah, shes always looking for a good Brain Slurp

Tim: Fuck i got so much crap on my hands. Maybe some other time

by Petersouris Rex April 19, 2010

mayo brain

A person who is just an absolute idiot.

carson is such a mayo brain. he just bought his vape an hour ago and just lost it at lunch

by sammyc April 24, 2017

crystal brain

noun

1. a keen mind, formidable intellect

2. that which an intelligent person uses to predict future events instead of a "crystal ball"

This term was coined by comedian Adam Carolla on his morning radio show to combat a harpy lawyer who was insisting that she couldn't possibly predict what an obvious outcome would be because she didn't have a crystal ball.

Reasonable Person: That new Sandler movie is gonna blow ass.

Douchebag: You don't know that. You don't have a crystal ball.

Reasonable Person: I don't need a crystal ball; I have a crystal brain.

by ContusorOssis November 5, 2012

Brain burn

When a person sees an event or an image that is so horrible they will never be able to forget it.

I walked in on my parents having sex and got instant brain burn!

by Rmc0315 December 28, 2011