KSI

a fat neek

guy 1: who's that

guy 2: it's ksi

guy 1: wow he's a fat neek

by YeetusFoetus October 14, 2020

ksi

that guy that beat logan paul silly and doesn't have a big forehead

ksi fucked logan's ass

by i sneezed 3 times November 29, 2019

KSI

A fat neek

'KSI's a fat neek' - Harry

by Dunkenstein May 26, 2021

Ksi

FATNEEK with a big forehead who gets bullied by his fans. Also is a rapper with his amazing song Lamborghini.

Fan1- yo it’s ksi

Fan2- omg yeah how did u see him so quick

Fan1- I can see his massive forehead from a mile away .

by R5by888 November 25, 2021

KSI

A YouTuber and boxer with a massive ass forehead, a shit beard and a shit trim

Person 1: have you heard of that guy KSI?
Person 2: yeah he has a dead hairline

by Evadence August 9, 2020

KSI

They guy who beat Logan Paul in a split decision

KSI is a fatneek

by KSI is a bosssssss April 19, 2020

KSI

Ksi means Knoledge, Strengh and Interity

ksi also is a youtuber that challenged logan paul to a boxing match, drew and is going to knock him out on november 9th
his also a nigger

KSI is a guy who will fuck the paul up

by FUCK LOGAN PAUL October 10, 2019