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A Zeus duece is a shit of epic proportions. It's when you take a shit and all you see is shit and the water is gone. Thats how big of a shit it is
Guy 1: Hey I just looked at the toiletbowl, Why is there a huge shit and no water?

Guy 2:I jus took a zeus deuce
by antoniown January 18, 2011
An Olympic size dump
That buffet last night was great, but man did I take a Zeus Deuce this morning.
by funwithpun August 10, 2012