Coise is an abbreviation of the name Marcoise, Marcoise is a play on the name of Marcus and Marcus is a joke name for someone named Mark.

Thus someone who is ugly with big ears and called Mark may be known as Coise.

Please also see Carbootoise, Carfunkle, Art Garfunkle, Art of a Guff, Crud, Grunt or Crunt
Coise is an ugly little Crunt.
by jlang1 December 3, 2011
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The New Yorker slang word for "curse". The term can be used to describe both profanity and evil hexes.
"Don't do it, Jakey! You will fall victim to da Witch's coise!"
"My favorite coise woids are 'fuck' and 'faggot'."
by BatteryMaster September 28, 2018
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