1 definition by Numbercruncher

Top Definition
Well-defined biceps that nicely fill out the sleeve of a t-shirt or short sleeve shirt. These arms can be seen anytime of the year but are prominent in summer and warmer climates.

Note: This type of arm is often displayed while wearing a tank top or completely shirtless.
OMG, the sight of his party arms make my asshole moist!
by Numbercruncher July 21, 2012

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