welcome to all kids coming from KSI’s reddit videos.

A fatneek is used to describe someone that gains an astronomical amount of weight but denies it everytime someone tells him
Someone: Hey you fatneek
KSI: aye yo thats mad
by seepah September 25, 2020
the word is use to describe someone who is fat and gets bullied by his own subreddit
by Matejwastaken February 10, 2021
KSI is a fatneek
by RagingCunt69 January 19, 2021
KSI is fatneek trust me and like if you want ksi to show hyper in a video.
by awleta January 26, 2021
KSI is a fatneek
by Uncle Asshole October 25, 2020