Man muscles 

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.

Man muscles by scrapple000 May 2, 2013

massaging my man muscle 

to masturbate

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.

massaging my man muscle by long john smellyballs August 19, 2009

man-muscle

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.

man-muscle by hawkgal January 23, 2011

Muscle Man's day

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

Muscle Man's day by Mitch Sorenstein December 10, 2020

Muscle Man Swiper 

A meme on Regular Show Amino. He was created by one of the leaders. It's basically Muscle Man from Regular Show in a Swiper costume. Also he's kawaii

Omg Muscle Man Swiper is the best thing on Regular Show Amino.

Muscle Man Swiper by BenderTheGroundskeeper May 30, 2020

muscle-man 

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.

muscle-man by Uncle Dimma October 14, 2014

Muscle Man

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."

Muscle Man by Mrbiginpants January 18, 2009