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1. The main villain from the movie Road Warrior. A frighteningly muscle-bound man in a strange (semi-nude) executioner-style getup, mostly balding wispy hairs (presumably due to radiation exposure), and speaking in a deep Arnold Schwarzenegger-esque accent. Possibly in homosexual relations to right-hand-man Wez, but don't you dare make fun of him. Nobody defies the Humungus. NOOUBODY! Well, except Max...

2. Alternately used to describe anyone overly intimidating and/or badass, but a bit quirky behind the scenes and possibly with a "touch of the lavender."

1. Greetings from the Humungus! The Lord Humungus! The Warrior of the Wasteland! The Ayatollah of Rock-n-Rollah!

2. Hitler was a HUMUNGUS Fuhrer.
by Parasexual Orgasm March 30, 2006
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Something very large, big or gross. The most popular reference for it is the large, semi-naked, bald baddie called 'Humungus' in the film Mad Max 2 or, in the US, Road Warrior 2.
'Did you see the humungus crater on the waiter's face?'
'Melvin's feet are humungus!'
by Colin L November 29, 2007
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