green fn refers to “green fuck nigga”, which is a reference to the NBA 2K series. a green shot means a 100% chance of it going in, or in other words, a perfect shot. this term is used commonly by the African American population while playing sports. this meme was popularized with an image of peter griffin shooting a fadeaway middy.
Green FN is a popular term in 2K but can be used anywhere else. It originally relates to a feature in the game, green, but you fail to use it properly. The FN part means f-ing. In other games, however, it can be used in these ways:
To say someone is doing bad, or selling a game.
To say someone annoys you.
“Remember that one Green FN shot you made?”
“Shut up, my finger slipped. I could clap you in a 1v1 easily.”
guy 1 playing basketball: *shoots the ball across the seven seas*
*swish*
guy 2 watching: "dude that was crazy"
overhyped guy 3 watching: "GREEN FN!!!!!!"