Top Definition
A large rotund man, with huge belly proportions and arrogant tendencies. A fatmingo resembles a flamingo through his pink attire and feasts on shiny shrimp. Fat-min-go

Can also be used as an expletive.
Wow look at that fatmingo, he has had many a shrimp today.

Holy Fatmingo!
by QWAG October 31, 2012

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