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1.
A west indian word for an extra crazy person;someone who has lost their marbles ; a person who is crazier than usual.
My mother is one mad rass.
by RAZZ March 12, 2005
 
2.
West Indian term meaning "dumbass"
Bai yuh wun madrass..
by GuYaNeSe StAr GyAL June 28, 2003