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1 definition by DrunkenChris

 
1.
To “go silverback”: to fly into an intense and sudden rage which might involve contortions of the face, grimaces, a roar of anger and raised fists. After attacking and at least attempting to land a few punches, the rage recedes and the person often goes in a subdued and slightly embarrassed silence.
When he found out I’d slept with his girlfriend, Andy went silverback on my ass.

All I said was that I thought her sister was cute and she went totally silverback
by DrunkenChris February 05, 2007