Cumbrain

1. A person who always thinks about cum and/or has an obsession with cum. These type of people are very unpopular and will not attract men or women, even if they are LGBT.
2. A person from Cumberland or Cumbernauld that is very smart.
3. A misspelling of "Cumbrian"
4. Another spelling for cum brain.

1. Look at that Cumbrain! He's fucking retarded!
2. I'm friends with a Cumbrain. He's very smart.
3. My friend is Cumbrain. Oops sorry I meant Cumbrian.
4. That girl gets called a cum brain. I don't, I call her a Cumbrain. See a difference?

by FunkDaBeat October 3, 2014

Cumbrain

A guy who is ignorant/nescient, who didn’t get a joke and took it very offensively

Person 1: That bitch a queer!
Person 2: WHAT THE FUCK?!? YOU ARE SO OFFENSIVE! I WILL CALL THE POLICE AND CANCEL YOU!
Person 1: Woah it was a joke you cumbrain

by Bordellr March 11, 2020

Cumbrain

To be really horny

“Damn isaiah be really cumbrain for Cú Chulainn and muscular women.

by Cú Chulainn Milker November 20, 2019

Cumbrain

Another term for a horndog.

Brian: Ayoooo guess whose feet I just scored!?
Tom: For the last time Brian, stop asking random girls for feet pics and go touch some grass you cumbrain.

by Mary Mary Quite The Contrarian March 28, 2023