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 wowiewowzers July 2, 2024

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

A ugly boy that you can't get rid of without surgery or you could just kill yourself. You know who you are. The annoying one in the party that you don't like but you don't want to be mean to. And he is a pervert to little boys and WILL touch you in inappropriate places
by AssassinCNB May 13, 2016

A calcified mass in a person's intracranial space that is created from when a person jizzed a fuckton of fluids at the end of a blowjob.
by eggsandpan November 30, 2018
