sin muscle

the muscle in the forearm which is used to masturbate (jack off)

Laura: Nice sin muscles! Haha!

Anthony: How do you know they're not from doing jazz hands!

6👍 1👎

puke muscle

The muscle in the back of your throat that causes you to gage

I pushed my penis so deep in her throat I touched her puke muscle

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thunder muscle

penis, usually hard

Drink that thunder muscle down, baby!

6👍 1👎

Mexican muscle

Invented after the 1988 Accord was released by the Mexican demand. Commonly features purple bubbly tint from Pep Boys ($29), an exhaust big enough to smuggle watermelons ($10), and cheap, plastic, fake chrome, hub caps ($25). Ultimately, this machine has devastated the suburban streets in the US of A. This car still lives today--twenty years old and the potential to impress any twelve year old middle school girl.

4 cylinders. 2.0 liters. One Mexican. Pure Mexican muscle.

"I see the Mexican muscle everyday"

26👍 11👎

cunt muscle

this is basically a derogative term to put someone down

"Dave, you're such a fucking cunt muscle. I hate you."

130👍 75👎

pc muscle

Your grundle area- the muscle in the space between your ballsac and your asshole that you clench to keep from coming.
Short for pubococcygeus muscle
Premature ejaculators do "pc pushups" to strengthen it.

Don't say pc muscle dude, just say grundle.

68👍 36👎

pc muscle

pubococcygeus muscles or pc muscles can be strengthened through kegel exercises for an enhanced orgasm

flexing your pc muscles makes you feel badass during class b/c no one knows but you're doing something sexual

82👍 45👎