Detroit Muscle

The anal sphincter.
The ring of muscle surrounding the anus, that allows it to open and close.

Ted likes to have a fist rammed up his Detroit Muscle.

by Dick Gosinyah July 17, 2022

Muscle Mommy

A tall, muscular, sometimes middle-aged woman who likes to treat their male (or female) partner like their own child, like how a mother does

Person 1: Bro, I got a muscle mommy girlfriend

Person 2: Damn, she looks old enough to be your mommy

by BSSNV2947 August 10, 2024

butter muscle

A penis incapable of achieving erection due to the over consumption of alcohol and/or meat (ribs).

"Hey dude did you score with Sally last night?"
"Nah bro, I got the butter muscle"

by KCMOMAN September 24, 2012

3rd Muscle

The supernatural ability that some women’s pussies have to grip a dick during a vigorous banging session. It will usually result in immediate jizzing for all but the most experienced men.

Pat: Was that broad you brought home last night worth another run?

Lee: She was like a unicorn using her magical superpowers of the 3rd muscle to grip my dick I lost it and filled her full.

by Bluto726 March 19, 2022

muscle neck

When u neck is so big that u can breath more then average human being

Navel got a muscle neck

by Yet squad boy September 19, 2016

National flex your muscles day

April 19 is when you send a friend, partner or someone you trust a picture of you flexing ur muscles.

*sends a picture of big booty flex*

wow! Happy national flex your muscles day! Here is one too ;)

by Nukemaster69 April 19, 2022

Muscle Mass

Oh really? You changed up your workout? That's hilarious! See? I'm not completely full of shit.

Hym "Oh! You made it sound like I was wrong before about the muscle mass thing! Guess not. CORRECT AGAIN! MASTER OR CORRECTITUDE!"

by Hym Iam December 2, 2023