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The act of masturbating at high speeds to achieve climax in as little time as possible. Best used when you are unsure of how long you will be alone. Sound effects are encouraged but not necessary.
"She was only going to be gone for a minute so I powerbated and finished in 18 seconds. New personal best."

"So I made drill noises while powerbating. I felt like I was on a pit crew."
by Errahtik October 16, 2009
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