Top definition
to have muscles in your nuts
John took off his clothes and i saw his testicles... he had musticles
by AssAids69 September 29, 2012
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The word is directly interchangeable with the word muscle.

The plural is musticles.
Linda was as the gym, showing of her massive bicep musticles.
by in_a_ru5h May 09, 2010
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