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Thompson's Water Sealer 

Sealing every orifice on your sexual partner's body with your various extremities.
I gave her the Thompson's Water Sealer.

Sounds like water's traveling through your balls 

A phrase used to say someone is so stupid that they can't even reproduce, they just have water for sperm because they can't even do what all living things are supposed to be able to do. This can be used to talk about women to say that they are stupid, but it's mostly men.
"Like I said before the Bible says the Earth is flat."
"You're going through the same arguements with no other evidence, it sounds like water's traveling through your balls, man."

Devil's water 

while under the influence of the devil's water...
Devil's water by author December 10, 2006

rita's water ice 

the best water ice in the world. you can only find the good stuff philly.
I eat Rita's water ice for breakfast, lunch, and dinner.
rita's water ice by JEN April 1, 2005

Gnat's-Water 

A terribly tasting (often home-brewed) alcoholic beverage. Used most commonly in the United Kingdom. Referring to the drinks similar taste to a foul pond where Gnat's often breed and can be found in high numbers.
"This pint of bitter tastes like Gnat's-Water"
Gnat's-Water by karientoch March 14, 2019

devil's water 

1: (n) When one is in a state of love or deep longing for another person physically. "Going out" with somebody. This is usually due to the yearning for another person in one's life, not for the actual liking of one person. Commonly known as "Drinking the Devil's water" or "Bathing in the Devil's water". It is called "the Devil's water" because of the fact that lust and sex are sins.

2: (n) A river in Northumberland, England.
"My 11 year old sister has friends with boyfriends, now she thinks she needs one!"
"Be careful, you wouldn't want her drinking the devil's water too early."

"Have you been to Devil's Water in England?"
"Why would I go there? That is just a small tributary."
devil's water by Thomas Anonymous January 12, 2009
More from Urban Dictionary
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
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
NYC people who migrate north to Quahog, RI to see the leaves in the fall.
New York and everyone from there can fornicate themselves with an iron stick.
leafers by ss++ February 8, 2005
Word of the Day on September 27, 2026
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