Crusty Knuckle

What is Crusty Knuckle?

A crusty knuckle is when you have your girl stimulate your prostate by shoving her middle finger up your anus. Look at her knuckle once she is done.

I blew a load so hard while Christina was giving me a Crusty Knuckle.

See checking the oil, rim jobs, rusty trombone

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Crusty Knuckle Edit Meaning