brain erection

When you have a large problem, and you're stuck because you cannot figure out the answer. In which case the only thing to do is think about or preoccupy yourself with something else, and let your brain erection go limp so that you can go back to the problem in a fresh state of mind.

You: I've been working for hours and can't figure out this homework! It's too difficult, why would they give us something that's impossible to learn?

Friend: Dude chill out you just have a massive brain erection. It needs to go limp, just go play with your pet squirrel for a bit.

(Later)

You: Hey this homework makes sense now!

by roboticsnail August 6, 2011

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

Street Brain

The act of getting your dome waxed while driving.

After the keg ran out I totally got some Street Brain driving this drunk bitch back to her place.

by NBA Jam Rules Bro April 3, 2009

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

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

boyfriend brain trust

A group of discarded girls that No man wants to date. They gather together and give each other advice on dating which seems idiotic because it is. They all have dogs or cats which are their replacements for men.

The boyfriend brain trust is gathering this weekend to decide whether or not Cathy should attempt to date Rich.

by 1chickenfucker February 25, 2017

Big brain time

A stupid solution of a Problem or thing

Lisa cracked her phone screen and texted Sara
Sara responded with "Take a screenshot so i can see the crack"

Axel "This is big brain time"

by Axmus September 23, 2019