A phrase made popular by the 1989 movie 'Heathers' and the 2014 musical of the same name. It is very similar in meaning to 'Are you retarded?'.
Heather Duke: Can I be red?
Heather Chandler: Did you have a brain tumor for breakfast? I'm always red
Heather McNamara: I've been looking forward to this all day!
Heather Duke: Did you have a brain tumor for breakfast?
Heather Chandler: Did you have a brain tumor for breakfast? I'm always red
Heather McNamara: I've been looking forward to this all day!
Heather Duke: Did you have a brain tumor for breakfast?
by ChrisWiltrout December 30, 2016

A grandiose insult only used for the highest of offenses, it means the victim of this unspeakable offense, are a mineral consuming infant with a round physique and the facial appearance of a tumor
"my girlfriend cheated on me the other day..."
"Well she's a salt licking skittle lookin tumor baby!"
"Well she's a salt licking skittle lookin tumor baby!"
by PixelKat February 20, 2023

by k7lty February 2, 2015

by wowiewowzers July 2, 2024

Person A: I can’t stand Carl! He’s such a fucking tumor!
Person B: I understand. I once dated someone like that.
Person B: I understand. I once dated someone like that.
by havefunfindingout April 4, 2019

A fur tumor is when an animal gets their fur so matted up and such, -caked with mud maybe- that it literally seems like its part of the animal...
Guy 1: Woah! Did you see the vet cut off Fluffys fur tumor?
Guy 2: Yeah, biggest fur ball I ever seen!
Guy 2: Yeah, biggest fur ball I ever seen!
by EmmaTheLeoaprd June 28, 2010

Noun, Adjective. Tumor is used to define any emotion that you have but don't want. It could also be used to describe a object or person.
"Man, I really like Sasha but she will never date me. My emotions are just a fucking tumor."
"I have this really annoying friend who won't go away. I wouldn't even consider him as a friend. He's such a fuggin tumor!"
"Bro I'm so fuckin hi RN it crazyyyyyy but i have this dept to this green dealer nowwww its gonnaa be succhhhhh a fuckiiiin tumor mannnn."
"I have this really annoying friend who won't go away. I wouldn't even consider him as a friend. He's such a fuggin tumor!"
"Bro I'm so fuckin hi RN it crazyyyyyy but i have this dept to this green dealer nowwww its gonnaa be succhhhhh a fuckiiiin tumor mannnn."
by Cosmic_Stars October 3, 2018
