factorial 

Originally a mathematical term. Denoted as "4!" and read as "four factorial," it's the product of 1x2x3x4=24.

Heard used when describing someone whose clothes are about 10 sizes too tight: "Yo, she ain't no size four, she's a size four factorial!"

Originating in the Manayunk area of Philadelphia, PA, as well as the Philadelphia suburb of Phoenixville, PA, as a word to describe anything or any situation as totally outrageous or ridiculous, it is quickly becoming adopted as colloquialism all over the Philadelphia metro area.

1.) "Steve ate an entire pizza last night when he was drunk. he's fucking factorial"
2.) "We don't need no factorial bitches up in here" (for added effect, the word "bitches" can be replaced with "betches").
3.) "My boyfriend caught me checking out another guy and went totally factorial on my ass."
4.) "We got drunk at the bar last night, and I have no idea what happened after that. It was a totally factorial night"

factorial by Four Factorial Betches November 25, 2006

Factorial 

A tutorial about facts

Facts + Snapple facts = factorial

Factorial by MoschinoHoe December 27, 2017

factorial funny 

Reading "!" used for punctuation as if they designated the mathematical function factorial.

LEX: I used Yahoo Factorial to look for Panic Fatorial @ The Disco concerts.
IRA: Since when is the word factorial funny?

factorial funny by PBMax May 1, 2008

factorial february 

When you masturbate n! times. n meaning the current day in February. Similar to Destroy Dick December, just deadlier.

It's the 29th of February, so I have to jerk 29! times 8841762000000000000000000000000 times. Yay! Well, factorial February was fun, but my balls are dead.

factorial february by randomperson89 November 3, 2018

Factorial Fap Februar 

This is the month, when you have to masturbate the number times a day, where number is factorial of the day's number.

Factorial is a mathematic technique to multiply whole numbers from 1 all the way up to the number, which is factorialed, included this number. It is signalized by "!".
For example

2! = 1 x 2 = 2
3! = 1 x 2 x 3 = 6
4! = 1 x 3 x 3 x 4 = 24
And so on...

For example number of faps on 3th Februar is 3!, which is 6. On 4 Februar it is 4! = 24.

On the 28th Februar the number of faps is 304888344611713860501504000000, which gives 126028581602064261120000 faps per second.

!DANGER! It may, or sure as hell will kill you, so do not overplay your hand.

-What is the cause of his death?
-He was participating in Factorial Fap Februar and overstepped.
-Oh I see. He is fourth kid in this week.

Factorial Fap Februar by JaAkaPanda December 6, 2018

Stacker Factorial

The attempt to consume any amount of Burger King Stackers in descending order, starting from the biggest Stacker desired to the smallest Stacker available.

Josh: I just ate a Quad Stacker Factorial.
Luke: What is a Quad Stacker Factorial?
Josh: It is the consumption of a Quad Stacker, Triple Stacker, Double Stacker and a Single Stacker.
Luke: Wow! That is some serious patty consumption.

Stacker Factorial by JDUBS910 February 24, 2014

Factorio 

A drug that will slowly draw you in and wreak havoc upon your very sanity in an endless quest to automate and perfect your setups. Its mere presence appears to have the power to distort time. Be prepared to lose your soul, mind, and virginity to this game. It will take everything you own and ruin your family and life. But it will be worth it. Because you just hit 1K SPM at 60FPS/UPS

“You still have a chance at quitting Factorio if you get out before green science.” - some reddit guy

Factorio by Darkslayer85 December 20, 2017