DeCum 

Verb: To remove the presence of semen or Cum.

The act of DeCumming can be used by removing the cum within the testicles through furious masturbation or sex.
alternately

The act of DeCumming can be used to remove Cum from hair, face, body or within the body.

i'll be over soon. Just need to DeCum.

DeCum by NotABadger77 June 23, 2017

decum 

The proper term for sexual intercourse between ten people; most commonly used to refer to a man and nine women.

Man #1: Dude, you know that girl that's got six sisters right?
Man #2: Yeah, why?
Man #1: I had a decum with her, her sisters, and her mom last night.
Man #2: But that's only nine people.
Man #1: Oh, and her cousin.

decum by Clubclem May 8, 2013

December 1st 

This is the day to send a nude to your fellow soldier that has just completed No Nut November. This is the first time your soldier will have nutted in a whole month so make sure your have the most prime picture possible.

Dude! I can’t wait until December 1st because that’s when I can finally bust!

December 1st by Jimmony Crickets November 3, 2019

December 2 

December 2 is national ditch school day

The day were you can purposely ditch school and it would be okay

Teacher: why was everyone absent yesterday

Student: it was December 2

December 2 by - Urban_dictionary- October 30, 2019

Alex December 

One of two vocalists in the metal band, Forgetting Skaro. Alex is a young musician from Sydney, Australia, described as one of the best low-toned vocalists of the year.

"I wonder how Alex December managed to become so skilled at such a young age."

Alex December by corvoisbadasslol October 24, 2012

4th December the gay day

Be as gay as you want with any boy without saying no homo. It is not gay. You can even touch tips

Callum: Can I slip my dick in your ass.
James: no I'm not gay
Callum: it's the 4th December the gay day so it's not gay
James: oh ok stick if in as far as you want

4th December the gay day by England_sex December 3, 2020

December 1 

This is the day to send a nude to your fellow soldier that has just completed No Nut November. This is the first time your soldier will have nutted in a whole month so make sure you have the most prime picture possible.

Dude! I can’t wait until December 1st because that’s when I can finally bust!

December 1 by Jimmony Crickets May 28, 2020