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Ackermann function

In the computational sciences, the Ackermann function (represented as A(m,n) is the simplest example of a total function (a function defined for all possible input values) which is computable but not primitive recursive, which was originally formulated to disprove the once-common belief that every computable function was also primitive recursive, but is now used to generate absurdly large numbers to horrify mathematicians.
Calling the Ackermann function with (4, 4) as its parameters is already too large to calculate for most computers.

xkcd's number calls the Ackermann function with Graham's Number as both of its parameters.

Mikasa Ackermann 

Cute anime girl from Attack on Titan, best waifu of all time, any male who disagrees is homosexual
Mikasa Ackermann is my favorite character is Attack on Titan

kieran ackermann 

Kieran Ackermann is the term used for a free roaming male human being living in B.C, Canada,who wears glasses, and can speak fluent french. You will know if you have met a Kieran Ackermann because he will add you to a weirdly named group chat, and text at all hours of the night.
kieran ackermann by Liker Cart March 15, 2016

mikasa ackermann 

Hot badass also in humans known as a carla
You are just like mikasa ackermann

LEVI ACKERMANN 

MY VERRY LOYAL AND SMART AND short HUSBAND SO BACK TF OFF
LEVI ACKERMANN by MRS. ACKERMANN January 28, 2021

lieutenant ackermann

A role in a porn called Blacked Raw.This role acts by Lana Rhoades who is pornographic film actress.The background set in WW2.A Nazi combat unit leads by lieutenant ackermann ambushed by polish partisan.Then the main part happen.
lieutenant ackermann you deserve to be punished
lieutenant ackermann by xqcyyyy November 23, 2024
More from Urban Dictionary

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
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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