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1. When your USB key is full of porn.
2. The act of putting your USB key on a computer to put some porn on it.
3. Having a sexual act with someone you just met.
"I took my USB porn with me so we could see some movies."

"I just USB porned my computer, needed some hard action on it."

"Did you know her?
No, but I made USB porn with her."
by Theprocrastinatorpanda October 09, 2016
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