Having been launched just a few months ago and only totally 85,000 users (at any one point in time) as of February 20, the Chatroulette phenomenon is already generating it’s own cult lingo. The Urban Dictionary defines “F9” as the act of “going through relationships rapidly, or to be promiscuous.” Still confused? So was I. “F9” derives from Chatroulette, where the F9 key brings up another chat-partner.