Definitions by PostHaste

F9 

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."

F9 by PostHaste February 23, 2010