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

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Yataa!

1. The cheer of hapiness from the character Hiro Nakamura from the television show, Heroes. It was first heard after Hiro succesfully tele..

Ravasexual

1. a sexual act that involves jerking it to posts at YCSM "ugh oh yea UGH...i just busted a nut all over your post i must be a ravase..

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Sin Muscle Edit Meaning