Top Definition
A male, usually under 30 years of age, suffering from a a condition that forces him to act in such a manner that his exposed muscles are constantly in a flexed position.
We were at the bar and some Posturing Pete showed up wearing a tank top and he had some skanky chick that smelled like cat food with him. He tried to play tough, but everyone just laughed.
by briantroy December 20, 2009
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