Any person who works out, who can’t grow or gain size but walks around like they’re the biggest person ever.
by @smoochsmacker December 20, 2018
Get the Muscle guymug. by Muffy the Slampire Slayer May 20, 2011
Get the Muscle Fatsmug. 
A. A good-natured nickname or banter between Heterosexual bros.
B. Someone characterized by being a slutty un-thinking sex fiend with low standards, similar to someone who thinks with their dick (basically any straight male).
B. Someone characterized by being a slutty un-thinking sex fiend with low standards, similar to someone who thinks with their dick (basically any straight male).
A: What's up you dirty Slut Muscle.
B: My friend Ben is a major slut muscle...he wants to bang all the bitches, regardless of what they look like. He's a regular bro.
B: My friend Ben is a major slut muscle...he wants to bang all the bitches, regardless of what they look like. He's a regular bro.
by Fat Box June 18, 2012
Get the Slut Musclemug. by David Yeum May 16, 2016
Get the muscle buttmug. by Eaton Holgoode May 2, 2015
Get the Muscle Rubmug. The butthole muscle that determines if a fart will contain solid matter and thus retains the fart for later release on the toilet.
by masedog February 3, 2008
Get the smart musclemug.