Crusty Demon 

Refrain from cleaning your asshole for two weeks. Then request a rim job from a girl.

"I gave her the best Crust Demon last night"

"I was planning on giving her a Crusty Demon however the diareah i had last night required me to wipe."

Crusty Demon by Elias Talbot September 9, 2007

Blue Demon 

Noun. The splash of the urine and feces filled blue water that makes contact with your ass when taking a dump in a portapotty.

John got hit by the BLUE DEMON when he took a dump at the constuction site!

Blue Demon by Da Blazin Caucasian May 28, 2010

The Demon Code

1) Cant decline a rock off chanllenge
2) Cant hug people in sexual context
3) Never break a promise
4) Cant be sick and/or perverted
5) Cant act in a sexuall manner
6) cant eat human flesh

hey i live by the demon code
totaly auesum Man

The Demon Code by So.Lickme October 25, 2007

speed demon 

a person with MNS and goes to school even though he cant work. slobbers alot

also someone who drives fast

god thats a real speed demon

urrghhh

speed demon by institona December 8, 2003

Maxwell's demon 

a hypothetical being that could separate a mixture of hot and cold water into two compartments: hot and cold water, letting the hotter-than-average portion through a trapdoor between the compartments. Maxwell's demon challenges the second law of thermodynamics: when hot and cold water are mixed, it will reach an equilibrium middling temperature.

It has emerged that Maxwell's demon can covert information into energy.

Maxwell's demon by uttam maharjan November 19, 2010

Fire Demon 

Holy fuck, like the coolest shit ever! It'll melt your fuckin face of when it sneezes bro. I can't even begin to explain how amazing that shit is.

"Holy shit, it's a fuckin Fire Demon!"

"Did you see that Fire Demon?"
"......................"

Fire Demon by NonEdible January 4, 2015

semen demon 

A baby who shows devil-like behavior that he got from his fathers genes

Hey!!! Semen demon stop biting me

semen demon by jrrich_radio April 6, 2020