Someone who is over 400lbs, has a red mop as hair, and is a bootleg ski mask the slump god
KSI is a Fatneek
by coldhotdogs111 August 1, 2020
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Someone who is fat, has red hair, and has a dumbass brother named deji.
"ksi is a fatneek"

Harry(W2S) 2019
by ksi_is_a_fatneek June 28, 2020
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You only came here because of ksis new video . Don’t lie

Fatneek is used by the youtuber to describe himself as his friends would call him fat because he was always ‘bulking
by Íosagáin abú June 9, 2020
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Some thicc dude with a big forehead with a heirstyle akin to a mop.
KSI is a fatneek.
by roofglider May 22, 2022
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