Definitions by TrollUmakeArt

9yn 

is a shitty youtuber who is mad disrespectful & constantly trolling girls on the internet.

if you troll on the internet you as dumb as 9yn

9yn by TrollUmakeArt September 9, 2021

9yn 

is a term for retarded and mentally unstable.
could also be a media person no one wants to watch

if you don't follow back you dumb as 9yn

9yn by TrollUmakeArt September 9, 2021