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Ass-jack 

a jack that is inserted in the anus.
Eeeeeee! That's the noise that ass jack makes. shhhpth
Ass-jack by cactus bunch August 2, 2003

Ass-Jack 

A person that is such a douche that they will yell at a kid even if it's not their kid. Its basically a Jackass but if a person who isnt good at english said it
Oy! that teacher who yelled at my little Manwell is such an Ass-Jack! Now i will throw a burrito at his car!
Ass-Jack by tojo le mucho madre November 4, 2009

Ass-jack 

Fucking somebody in the ass in a jackhammer motion and making jackhammer sounds
I am going to ass-jack you so hard, you won't shit right for a week.
Ass-jack by David_jason May 26, 2016
Kicking someone directly in the asshole. Perhaps so hard that the big toe gains insertion.
"I'll ass jack you to the moon. My foot will rupture your uterus."
Ass jack by Herschel Quintron December 29, 2003
Fun inversion of Jack Ass. Instead of calling someone Jack Ass just say Ass Jack.
That guy at work is a real ass jack.
Ass Jack by Libraryguy December 16, 2009
1.) A female most often a mother that spends their life dragging another female down to keep her from accomplishing everything she couldn't

2.) A completely useless tool
1.) I can't believe her mother is such a ass jack, She ruined that girls life before she had a chance
2.) She serves about as much purpose as an ass jack
ass jack by Bigmike13 May 10, 2022
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
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