Something that is exteremly large, and in most cases breath taking. Derived from the word humungous but has been shortened to save time.
That was a humungo rat that just crawld off the train.
by Humungo Samone September 4, 2007
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Something extremly large, huge
Horny Man: Man, those your boobs are humungo!
Pool Girl: Thanks, baby!;)
by C*yerkey November 3, 2005
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