Top Definition
The act of hatefucking a person for no reason other than that said person bears a passing resemblance to your ex.
"I got so drunk last night, I wound up dopplebanging a Starbucks barista against a vending machine"

"I'm so sorry I dopplebanged your mom"

"Paul just got dopplebanged"
by Amiahipstermaybe December 04, 2011
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