The type of muscles that develop as a guy transitions from teen/young adult to full fledged man. It is accompanied by a gain in strength and usually happens between the ages of 26-28. Man muscles aren't bigger, but they are rock hard and will allow men to beat much "stronger" young men in things like arm wrestling and give them greater endurance in repetitive hard labor.
You think Bryce Harper is a good player now? Just wait until he gets his man muscles! or Now that LeBron James has his man muscles the rest of the NBA doesn't stand a chance.
by scrapple000 May 2, 2013
Get the Man muscles mug.
The muscle in the forearm that gets ripped as a result of jerking-off to often.
Damn!!!! Look at his arms! That boy spends to much time alone working on his man-muscles.
by hawkgal January 23, 2011
Get the man-muscle mug.
dude what the fuck happened last night? i called u like 5 times.

sorry man i was massaging my man muscle and i just lost track of time.

oh, ok. i understand.
by long john smellyballs August 20, 2009
Get the massaging my man muscle mug.
A coolidiculous term for a person who is neither an athlete nor a body builder but still physically strong
I need muscle-man tonhelp me cross the street with my grocery bags.
by Sexydimma October 15, 2014
Get the muscle-man mug.
A total douche who shows off his muscles like the guy in the Iron Gym commercial.
Person A: "Man, I just lifted like a thousand pounds."
Person B: "You're a total muscle man."
by Mrbiginpants January 18, 2009
Get the Muscle Man mug.
The greatest character in any TV show ever premiered on Cartoon Network. This is an undisputed fact because of his stunning looks, his amazing humor, and his deep and beautiful voice. He is also tall, skinny, smart, and very charming.
Guy1: Hey bro, do you know who else is Muscle Man? MY MOM!
Guy2: Swag
by PLEASECANIHAVEAIGN May 6, 2022
Get the Muscle Man mug.
On December the 11th, every person should tell "my mom" jokes
Person 1: I'm gonna participate in Muscle Man's day this year
Person 2: you know who else will participate in Muscle Man's day? MY MOM
by Mitch Sorenstein December 10, 2020
Get the Muscle Man's day mug.