NewGuy311's definitions
The action where one male feels intimidated by the presense of another male while in the company of a female (or potential partner) and puffs his chest out as a form of peacocking.
When I met NayNay at the game, her boy Micah totally Mongoosed me. Like I'm a threat to take NayNay away.
by NewGuy311 May 15, 2010
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