KSI

A big Fatneek. A person who loves to lose weight even though it doesn't work.

My brother's a real KSI, he doesn't give up.

by dutchdorm September 17, 2021

ksi

a person with a strong ashy elbow that can knock a 40 year old out cold

that dude with a massive forehead and snake hairs is ksi

by urbenwrongspell June 6, 2023

KSI

Knowledge strength integrity / famous British fatneek

Ksi is the worlds biggest fatneek

by Ksi’ s music is rubbish May 28, 2021

KSI

Fat forheaded man with dreadlocks

KSI Is the biggest fatneek ever

by Rhino Llama July 23, 2021

KSI

The definition of ksi is rich monkey this dude is the plug not the but plug DA PLUG HE EAT ASS AND HE BUULIE VICKSTAR and world record of foreheads

KSI IS THE PLUG BRO

by ey wanna fuck?!?! May 3, 2019

KSI

a fat neek

“KSI’s a fat neek”

by thatdictionaryhoe August 13, 2021

KSI

The bandana boy who beat the twat Logan Paul

He is really rich and made of nickel and gallium
He has some family issues going on right now
Subscribe to him!!

That guy looks like KSI

by Ndhfhdhnd December 11, 2019