Means lame; opposite of 'ace' meaning cool. Used in Cariboo Region of British Columbia, Canada all through elementary and junior high school in the 70's.
Whoa! You got jumped for your lunch money by that grade eight fucker? That's deuce, man.
A large human weighing in the area of 200 pounds who is definatly obese. When one sees a deuce they immediately throw up 2 fingers to commemorate the overly fat person.