When somebody makes a really bad joke, or (even though is seems there's no such thing as) a bad pun ( :O )
Dave: "What did the fish say when he swam into a wall?
Dam."
Steve: "... Tumor Humor, Dave. Tumor Humor."
Dam."
Steve: "... Tumor Humor, Dave. Tumor Humor."
by Stephanzor February 9, 2022

This is an extremely well-known phenomenon among the mentally gifted. Those who are more mentally capable than their peers have a larger than average tumor in their skull. This tumor, due to its size and maliciousness is capable of doing more damage to the prodigies' brains than the average person. This occurs when these individuals leave the safety of their bed and are exposed to overly dynamic activities such as running, jumping, or the horrible agony of HIIT. Therefore, experts advise these gifted individuals not to expose themselves to any of these dangers. Highly common symptoms of such a tumor are headaches and/or laziness developing during or after the individual commits the sin of performing any of the above-mentioned endeavors.
by breadakita December 21, 2020

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

When a man’s cock is so fucking massive that it causes a bulge on the exterior of a females stomach when deep inside, protruding upwards creating the image of a bump and tumor
“Girl, last night.. I was watching him fuck me raw and that cock tumor, my stomach was bulging from his massive cock”
by Double_savior19 August 11, 2022

by Reconter May 18, 2018

by k7lty February 2, 2015

"Brian Tumor" (noun): A highly contagious and profoundly debilitating condition primarily affecting pre-adolescent males named Brian, typically observed at age 12. The disease manifests as an uncontrollable expansion of ego and a dramatic increase in the frequency of unsolicited, poorly timed, and often cringe-worthy attempts at humor. Symptoms include a marked decline in tolerance for other people’s well-being, an overwhelming need to insert oneself into every conversation, and an alarming tendency to dominate social situations with an incessant stream of 'inappropriate' jokes.When you're stuck in a group chat with a 12-year-old named Brian, and he won't stop making terrible puns, interrupting every conversation, and somehow turning everything into his personal highlight reel. It's like his brain is a tumor, growing uncontrollably, with zero regard for anyone else's sanity
Bro, I can't take it anymore. Every time Brian speaks, it's like a Brian tumor of bad jokes and unsolicited opinions. Someone please save us.
by sawcon May 14, 2025
