Knuckle

A halve-erect penis. When your halve hard, and halve soft it equals a knuckle, referring to your finger knuckle when bent.
She turned me on, but just left me there. I had a real knuckle!
by Kujawa September 19, 2018
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Knuckle

A halve-erection. The state of which a penis is both erect and soft simultaneously.
She really turned me on, but left me hanging! I had a real knuckle!
by Kujawa September 19, 2018
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