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1.
Having a threesome with a person and their doppleganger
I would totally dopplebang my boyfriend and his look-a-like
by itsrainingflies April 23, 2013
 
2.
(v.) To have sex with your doppleganger, past or future self, or someone who looks alarmingly similar to you (i.e. your twin)
I totally fucked up the time space continuum when i went back in time and dopplebanged myself.
by BrooklynTrees February 23, 2012