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1. bang one out
Male: To masturbate. To have a wank.
"Fuck me, she's gorgeous. I'm gonna have to go home and bang one out over her."
by Esteban Lorenzo Jul 29, 2003 add a video
2. bang one out
to quickly and effectively blow your load whether by intercourse or stroke-job
Yo Tahiya, wanna go bang one out in between classes?
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