Sin Muscle

What is 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!

See sin, muscle, forearm, masturbate, up, down, movement, jack, off

Manjack

1. urban legend. fictitious homosexual pervert who preys on young boys. name originates from his favorite action to perform on his victims...

Pbs Kidshow

1. When someone is carrying on like a preschool teacher, or using VERY obvious statements when no children are actually present. That guy ..

{dod}

1. A guy who completely owns at Halo for PC and almost every other game he has played. Noobs revere him, Vets respect him, and everyone lov..

All you need for a faster workflow in one place.

Sin Muscle Edit Meaning