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Someone who has absoulutely no control of their liquour, and Frequently goes on drunken tirades. Wreaking havoc on anyone or thing in his path. Usually of Native American descent.
Damn, Thunderbear went off last night and broke my lamp
by mike April 12, 2004
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A strong, powerful and cunning bear that intimidates enemies by making stomping sounds emulating a herd of mama moose.
I was scared because I thought I was gettting chased by a mama moose, but it was just a thunderbear.
by Imeanreally? March 10, 2018
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A team of epic proportions, big and brawny and bring the thunder at every opportunity. Lightning fast and a powerhouse that cant be stopped. A charging thunderbear is a force to be reckoned with. You do not want to face off against a Thunderbear. Usually seen in the Pacific Northwest
We got ran over by the Thunderbears. The Thunderbears\ are unstoppable. Mommy please dont make me play, I have no chance against the Thunderbears.
by JW_rox May 06, 2018
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