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

Uncle Grubby's Special

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Blow It Out Your Ear Craphole

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Bunning In Narnia

1. The act of smoking a joint in the trees of Whistler, BC. "Ay bro whats good?!" "Just got back from bunning in Narnia!!&..

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Sin Muscle Edit Meaning