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photobombing 

Intentionally posing in other people's photos, for a later surprise.
Usually people making funny faces in the background, without the knowledge of the main subjects of the photo.
Jim is always photobombing, he messed ups some of the best photos from the wedding.
photobombing by U8IK May 6, 2008
Word of the Day on June 20, 2008

photobomb 

(verb)- to drop in a photo unexpectedly...to hop in a picture right before it is taken.
sarah: hey why is jimmy in the background of our prom picture?
ryan: idk, he must have photobombed it at the last second.
photobomb by jervis_star1 June 27, 2008
Word of the Day on December 5, 2009

Photobucket 

This image or video has been moved or deleted.
Photobucket is so glitchy...
Photobucket by gcncc October 27, 2012

Photobomb 

An otherwise normal photo that has been ruined or spoiled by someone who was not supposed to be in the photograph.
The most common photobomb is someone in the background making a face.
Photobomb by Teresa from OK November 16, 2009
Word of the Day on September 28, 2012

Photobucket 

Good for editing pictures, but not good when it "terminates" your account for violating the Terms of Services, when you have not.
"Man I am so pissed off. I tried to get on my Photobucket account for the first time in a while. It said I violated "TOS". What the hell?!"

Reverse Photobomb 

(verb)- a photo taken without the knowledge and awareness of the person in the foreground, but known and planned by the person in the background and the photo taker. Basically the reverse of a traditional photobomb, where someone unsuspectingly jumps into the background of a people-posed photo.
Lark: Hey Jan, let's reverse photobomb Craig!
Jan: I'll run up behind Craig and pose. If he see's me, he'll have no idea what I'm doing.
Lark: This is going to be a great RPB pic! Let's RPB Gike Mallego next!
More from Urban Dictionary
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
korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
Word of the Day on September 30, 2026

Slop Grenade

When someone uses AI to generate a large document, slide deck, or piece of code/software and tosses it over the fence for you to deal with.
Chad: Hey Brent I sent you the new backend API change to review, it’s only 100 files changed.

Brent: he just tossed me a slop grenade
Slop Grenade by Joe Squid September 28, 2026
Word of the Day on September 29, 2026
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