Banishing Demons 

A Gamer's term for the act of taking a really long and extremely putrid shit. Usually split into two parts, striking the legions down into the Abyss ( the toilet), and The banishment (the Flush).

The DM: "Banishing demons again?"

The player: "Yeah, it's so bad in there, I think I banished Demogoron."

Banishing Demons by Gamer Kind March 23, 2011

Banishing The White Demons 

A male Jerking Off, Pounding Pud, Five Knuckle Shuffle, Stroking It, Playing The Skin Flute, Beating Off

Billy was banishing the white demons to an erotic photograph on the internet.

Banishing The White Demons by unknown69a October 6, 2013