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boobshelf 

A large set of breasts that stick out far beyond the body, so that the woman who owns them can not see her feet. A boobshelf often catches spilt food, leaving stains on clothing, often along the cleavage line. Boobshelves can be useful for laying plates while scooping food into your mouth or resting books for comfortable reading.
My boobshelf is so big, it hangs over the table when I eat. I am constantly cleaning food stains off of my shirts because of my boobshelf.

bookshelf ass 

a chicks ass that is round, ample and sticks out just the right proportionate amount on which you could literally stack books on
yo holmes, that strippers got a great bookshelf ass
bookshelf ass by ronnie_e May 14, 2009

There's a condom behind that bookshelf 

Joke about children's attitude towards sex and lack of practical knowledge or reading skills.
Kid A: There's a condom behind that bookshelf.


Kid B: What's a bookshelf?

it's on my bookshelf 

a book, usually some type of hip or classic piece of literature, that you bought and read 14 pages of it and never finished, yet you left in casual display in your living area so people think you're well read.
-1"Yo have you seen the movie Fear and Loathing?"
-2"nah, but i read the book."
-1 "I heard the book is good. Did you like it."
2- " Well I never actually read it. it's on my bookshelf though.

empty bookshelf 

Woman with huge breast implants that stick out like a bookshelf who has no books (brains) to go with it.
Did you see that story of the woman that was fired from her job for being "too sexy"? Well, once you start digging into her background and see some other videos of her, it turns out she's just an empty bookshelf.
empty bookshelf by Bob and Lesa July 26, 2010

Bookshelving

Squeezing through a tight crowd back to front rather than side to side.
We left the show early, bookshelving through the crowd to get out the back.
Bookshelving by Smjbab March 9, 2017
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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