shit of brain

It's usually being called when there is really a bunch of shit in someone's head .

Hey , Terry ur really have a shit of brain.

by Urban dictionary is litttttt November 20, 2017

SkullFuck Brain Surprise

What happens when I sniff Grag

Shit MuckyClaire that seriously SkullFuck Brain Surprised me!

by MuckyMike November 4, 2010

Car Brain

An American living the suburbs who is incapable of thinking about getting from place to place without taking his or her car. Complains about safety on transit all the time, and opposes all "socialist" transit projects, even though it would benefit them without the carbrain needing to take action. May alsoo be a NIMBY, but not necessarily, and should not be used interchangeably.

Person 1: The subway is filled with druggies and homeless people. In my car, I'm in my own safe bubble.
Person 2: You are SUCH a fucking car brain!

by URBANist_ November 3, 2025

Runner's Brain

A temporary reduction in mental capacity due to having recently run several miles.

After my run yesterday, I spent half an hour wandering around the grocery store trying to decide what to eat for dinner, only to remember that I had just gone to the grocery store that morning. So then I went to In-n-Out. I think I'm coming down with a case of Runner's Brain.

by An Avid Runner April 8, 2013

Vanilla Brain

when the receptors in your brain have been gloriously untouched by things like recreational drugs and excessive video gaming, and thus remain sensitive to serotonin and dopamine.

Coworker 1: "yo why the fuck Sarah always writing motivational sayings on the whiteboard during break?"

Coworker 2: "oh, she got vanilla brain bro"

by Breadboibraincell June 7, 2022

Brain rush

That feeling you have when you’re so focused you can almost feel your neurons working

“I’m on such a brain rush I’ll finish this essay in no time!”

by Daniloren April 10, 2022

Scratch one’s brains out

Thinking about something really hard but couldn’t figure it out

To solve this problem one needs to scratch one’s brains out.

by Realwords3747539 July 25, 2018