A Mongologanger is The word mongoloid crossed with the word doppelganger. Making mongologanger. Its the retarded versions of people. Its your look alike if you were deformed and or retarded.
Hey that girl looks just like your ex heather! Yeah she does except the uglier version of her. Yeah its her monologanger.

People say I look like brad pitt. Yeah more like his mongologanger!
by TruePoweR22 June 28, 2014
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