It's the same day as "national grab ass day", which someone defined as April 11th.
Basically if a guy grabs ass without consent, he's asking to get his hand broken.

boy who grabs my ass: I can do that because UD says it's national grab ass day

me, after I break his hand : and I broke your hand because it's also National grab my ass and I'll break your hand day

National grab my ass and I'll break your hand day by em.ily.et May 24, 2018

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Hand-brake skid

To wipe your bottom with your own hand then shake someone else’s hand leaving a skid mark

No way Shane just totally give me a hand-brake skid

Hand-brake skid by Tinzopopo December 4, 2020

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hand brake

the parking brake. hen pulled at fast speeds locks up the back wheels and causes the car to lose control and slide around, (drift)

handbrake used in hand brake turns. used for parking in every day use

hand brake by mills1166 October 12, 2008

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hand brake

if someone is boring and puts a stop to the fun they are a hand brake.

He's no fun, don't invite him out tonight, he'll just be a hand brake.

hand brake by Oompa Loompa 73 April 29, 2009

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Hand brake

In football, play less than to one's potential, due to self inflicted obstacles. Be less free and flowing than usual, due to some psychological block.
Term introduced, and used constantly, by Arsenal's manager Arsene Wenger (who also introduced several other terms, as "footballistically", and others.

"I believe in the first half we were not sharp enough, we played a lil bit wiz de hand brake, and we didn't create many chances".

Hand brake by yuviken February 22, 2013

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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

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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

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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

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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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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

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leafers

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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