A fork of Rural Dictionary
(adj) someone who acts very slick and clever. Combines the words "Fly" (Kool in a ghetto like manor) and "Fish" (an aquatic creature with gills) word can used to describe someone that you think just said something cool and/or funny. *NOTE: Make sure that the person you call a fly fish knows the definition or else you will sound like a douche bag.
Gabe: "Yeah, me and Channy were kicking some ass in World at War last night." Austin: "hahahahahaha-you said 'duty'!" Gabe: "OH, YOU FLY FISH!" Outsider: "You guys are queer"