A abbreviation of Fortnite
Friend 1: "Hey bro you wanna play fn later?"
Friend 2: "Sure, man."
Fly nigga, someone who got drip or a fresh cut.
You got that drip and that haircut. You are a FN
“Fn” is a short and sweet adjective for “Fuck no” and or “fuck naw”
Person 1: “wanna ft with me and my new boyfriend?”
Person 2: “Oh fn.”
It means Football Nation so if your apart of a football team you can say your apart of a FN