boom

a sound made by a thud or an explosive material exploding. Or made by hard collisions

it is also the sound of your mama's farts.
When he hit the wall it went boom! That must've hurt!
That firecracker was so strang it didn't make a crackle. It made a boom!
Those colliding cars went boom!
by cyclopentane July 23, 2018
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Counterscare

When someone scares a person and that person's reaction scares them back.
A: *whimsical approaching*
B: *snooore mimimimimi snooooooore mimimimimi*
A: BOO!
B: AAHH!!
A: AAAHHH!!!
B: What the fuck are you yelling for, asshole?!
A: You counterscared me man!
by cyclopentane January 12, 2025
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Finnish Memes

Finnish Memes (often abbreviated FMs) are in an alternate reality bubble within our own world, they appear to be what people would find funny in a world similiar, but different from ours.
Finnish memes are crazy, and you can never understand them since they're in, well... finnish.
by cyclopentane August 04, 2022
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Kokoreç

döner? kebab?! YOU IDIOT, TRY SOME KOKOREÇ INSTEAD!
by cyclopentane June 09, 2023
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Void

A term used to refer to black cats. Probably comes from the fact that in some lower quality pictures, black cats appear to be pitch black.
My void Snuggles is two years old today!
by cyclopentane August 08, 2022
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Fast Growing Hierarchy

The fast growing hierarchy (shortened to FGH) is a method of defining large numbers. It takes in two inputs.

We define f(0,n) = n+1. For example: f(0,3) = 4. Next step is iteration. f(1,n) is f(0,f(0...f(0,n)...)) where f(0,...) is iterated n times. For example, f(1,2) = f(0,f(0,2)) = 4. Same rules for f(m,n).

Now let's define what ordinals are. Very simplified, they're a kind of infinity.
Consider this: |||....|

This has infinite sticks, but there's a 1st stick, 2nd stick... the last stick is the ωth stick. You can have ω+1, ω+2, ω+3 etc too. For our purposes, a limit ordinal is an ordinal that has no finite part at the end (so ω+3 is not a limit ordinal but ω×3 is.).

So how can we use this within FGH? We need to define a fundamental sequence (FS). An FS is the steps we take to reach a new limit ordinal. So the FS for ω is 0,1,2... and for ω×2 it's ω,ω+1,ω+2...
We can write this as: ωn = n, ω×2n = ω+n, ω^2n = ω×n and so on. There are more ordinals, but it'll do for our purposes.

This is not the only system for an FS. There's more, but I cannot fit it in an entry.

Now consider an ordinal α. Now FGH can be defined concretely:
for f(α,n):
if α is 0, it is n+1.
if α is not a limit ordinal, it is f(α-1,f(α-1...f(α-1,n)...)) where f(α-1,...) is iterated n times.
if α is a limit ordinal, it is f(αn,n).

Let's do an example: f(ω,3) = f(3,3) = f(2,f(2,f(2,3))). I know that f(2,n) = n×2^n, so it's 1.804356 × 10^15151336, which is HUGE! Imagine how large f(ω,10) is.
Graham's Number is approximately equal to f(ω+1,3) within the Fast Growing Hierarchy.
by cyclopentane December 01, 2022
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Cardinal

Obscure slang for a man's penis.
Don't put your cardinal around that hoe.
by cyclopentane October 30, 2022
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