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

Dirty Harold And Kumar

1. Doing a chick in the ass while she eats a White Castle Burger then pulling ur dick out and wiping it on her burger and saying "That..

Tender Dick

1. A man who lets women walk all over himself . Low self esteem.Has no morals and lets women control his thoughts and actions If he was&ap..

[polar Express]

1. When a douchebag sprays his mansauce within a condom while fucking a cheap buttwhore, then puts the condom in the freezer for an hour or..

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Sin Muscle Edit Meaning