1 definition by PostHaste

To go through relationships rapidly, to be promiscuous.

Derives from Chatroulette, where the F9 key brings another chat-partner up.
Dude 1: "I was thinking of trying to start a long-term devoted relationship with Maria."

Dude 1: "Not gonna happen. She straight F9s dudes."
by PostHaste February 24, 2010
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