Top Definition
A Gromulous is the scientific term for the family in which Grimace, McDonald's popular purple critter, comes from. A Gromulous is any creature that is gum-dropped shaped and purple. A Gromulous can also be used to describe a fat person in purple clothing.
Chad: Dude, check out that purple beast over there

Jimmy: Holy shit, that lady is huge!

Paul: There is a Gromulous on the loose! run!
by Ronald McDickfart February 12, 2010
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