Cumbrain

A person obsessed with sex to the point where it becomes a detriment to their abilities to socialize and think through problems.

Mike keeps flirting with every girl he meets like a fucking cumbrain.

by Balanced Breakfast January 15, 2019

Cumbrain

An adjective used for someone who is constantly horny. To be used as insult to male who thinks about sexually activity 24/7.

"Yeah I kept asking her for nudes but she didn't send any."
"Stop begging for nudes and actually get a life you cumbrain."

by schoeymmii July 18, 2019

Cumbrain

The average redditor, obsessed with hentai, porn and jacking off.

Ewwwww, Brian is such a cumbrain

by Doctor ball-tickler February 8, 2022

Cumbrain

A person obsessed with sex to the point where it becomes a detriment to their abilities to socialize and think through problems. They typically act perverted and a threat to women.

Mike keeps flirting with every girl he meets like a fucking cumbrain. Call the cops

by ♥🗺☠ October 1, 2021

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 12, 2020

Cumbrain

To be really horny

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

by Cú Chulainn Milker November 21, 2019