Sex Muscles

Any and all muscles that are bulging or well-defined from sexual activity, typically the biceps.

Me: Did you see the size of his biceps? That's hot - his chest too.
Her: Those are some damn fine sex muscles.

by Siouxsie Supertramp May 8, 2020

Muscle sperm

Involuntary contractions of a muscle, typically harmless and temporary, but can be painful.

"Ow my muscle! What is this?" "Muscle sperm lolololol"

by Maximum Hamilton June 21, 2023

Muscle Factory

A place where only the alpha males go to pump iron. Legend says their arms are bigger than your legs.

Muscle Factory - where Moulder got boulders for shoulders

by Kineton Florists March 14, 2019

Muscle Nugget

A well-built compact beefy man

Kaleb has been hitting the gym hard - he is such a muscle nugget.

by Bohjosh April 8, 2019

Italian muscle

When speaking of one's Italian muscle, one often refers to the male genitalia also referred to as 'phallus'. Due to the Italian culture often being associated with romance and affection, and the penis being a prominent muscle, one's "Italian muscle" is a reference to one's penis.

"He really knows how to flex his Italian muscle"
"I could use some Italian muscle on Friday night"

by Michelangelo November 29, 2021

muscle baby

One who was once skinny, frail, and weak then was taken by a muscle daddy (swole sensei) and buffed up.

"Why is Rich working out with us?"
"He's my newborn muscle baby."

by thePOGlife February 4, 2015

Pucker muscle

Your dick will pucker when u happy

Damn dude I got a huge pucker muscle Last night with your grandma

by Big chub August 10, 2017