Skip to main content
Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.
Bum - The obvious, ass, fanny (If you're american)

Fapper - Tossing off
BumFapper
Do the maths
Avalon Audrey: "Wow Chelly, isn't Jonjo the biggest bumfapper you've ever seen in your life?"

Chelsey Amelia: "He is indeed Avie!"

btspopper 

someone who only listens to bts and thinks bts is their own genre
multis: dfi if you’re a btspopper

most multis hate btspoppers
btspopper by no context October 12, 2020

btspopper 

originally used for stans of the group BTS who believe "bts is the genre" as to not limit bts and their music to any particular genre. The term originated as a result of an interview with the recording academy in which bts members answered "the genre is bts" in response to a statement about how their album Map of The Soul 7 broke free from genre confinement as it touches on many genres and sounds.

Over time this word has spun into a negative one and many kpop fans nowadays just throw it around as a word for armys who only stan bts. alot of other fandoms have started doing xyz poppers too despite not liking the term btspopper

anyways heres a gif of park jimin, it boy and loml
kpop fan: DNI racists, homophobes BTSPOPPERS GRR, abelists, sexists

kpop fan: i dont like this definiton of btspopper grr im going to dislike
btspopper by armyblinkssexiest February 22, 2021

bumcoppers 

small, pebbly, rusty-looking plops that havent been flushed and which resemble mucky old coins in a fountain.
look at how these bumcoppers have tarnished the surrounding toilet water and made it all rusty
bumcoppers by johngo August 6, 2011

bombpoppers 

a woman's breasts than are extremely and abnormally large.
DAMN!Check out KAtie's bombpoppers!
MAN! GIrl over there aint got no bombpoppers!
bombpoppers by tanya banana fowney October 11, 2006

bum popper 

someone who takes pills via their anal region.
ashley is such a bum popper, ever since she was young
More from Urban Dictionary
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".
"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"
Dutty by J Hall April 3, 2003
Word of the Day on October 1, 2026
Load more