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when you helicopter (spin) your dick in a circular motion so face that all the blood goes to the head, cause it to bulge like a sphere. Resembles a mace
Guy 1: Dude you! Your head is going to explode!
Guy 2: Don't worry man! It's just a meat mace, everyone's been doing this since kindergarten.
by jffellis2 October 22, 2013
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A wang or Largeish penis.
"Dude! Put your meat mace away!"

"I call him Mr Dongski."
by Allabaster November 09, 2009
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