ER4S

Name: ER4S Mug
Brand: Urban Dictionary
Price: 25.00 USD
Availability: InStock

The best damn headphones in the world. Smooth, neutral, and very musical, and with 40dB of isolation to boot!

Upon inserting the ER4S into his ears, PiccoloNamek had an intense eargasm.

ER4S by PiccoloNamek August 18, 2006

Get the ER4S mug.

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.

Add to cart $24.95

Choose size $32.95

Choose size $49.95

Add to cart $29.95

Prices in USD. Free US shipping. International shipping and regional book fees are shown before payment.

Boffin

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

Get the Boffin mug.

Related Words

ER4S

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

Get the Pee Calculus mug.

Dutty

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

Get the Dutty mug.

Ajumma

korean word for madam, older woman

Ajumma wait a moment

Ajumma by aintnotinbutnice July 5, 2009

Word of the Day on September 30, 2026

Get the Ajumma mug.

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

Get the Slop Grenade mug.

floxi

Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).

After we broke up, he was floxi to me.

floxi by Dr. Geek May 13, 2009

Word of the Day on September 28, 2026

Get the floxi mug.