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1.
To do something well. Play in good spirit. To be a good competitor. Reply to an act of good nature.
Origin (Australia 1970's and 80's). To be good at marbles, and knock your opponent out, he would reply with "Good Doogs".

Office worker 1. "I have that folder for you".
Office worker 2. "Good Doogs"
by MrChooka69 December 19, 2012