FRNCPHN - we deciphered this to mean francophone which means someone who speaks French. Leave it to a French guy to make that his license plate. Go smoke your Gauloises alone. Thank you @meldiz for finding this one.
DJ TONYC - idk what is more douche (1) that this guy felt the need to advertise that he is a DJ; (2) that his DJ name TONY C is likely 2/3 of his real name; (3) that TONYC is a portmanteau of Tony and NYC