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1.
the alter ego of Gene Simmons of Kiss. the demon is a god and the name should be used only in the upmost respect.
i saw The Demon at the kiss show lats night
by Hunter Blake January 24, 2006
 
2.
The alter ego of an inconspicuous man who takes pride in his association with a secret lifestyle of leather, metal studs, and extreme workout mixes.
Little did Sally know, on the weekends John was "The demon".
by The demonxxx August 14, 2008
 
3.
To have a sudden onset of the shits that you cant hold. You start sweating and getting a sharp stabbing pain in your guts.
Dude i was in the mall today and i had a case of the demon!

No i cant come out and play i am being hunted by the demon!
by Smurfdog January 03, 2008
 
4.
When Tim Ingalls puts pencils in his hands and shakes them up and down like a demon.
He is doing the demon!
by Tim Ingalls April 25, 2005