KSI

KSI stands for one thousand pounds per square inch. Or a fat Neek who cannot box at all. And has a dead trim as well as a shite beard.

Girl 1: EWWW! You know KSI that fat Neek?.
Girl 2 : Yeah he's so fat and ugly and bad at boxing. And don't get me started on his dead trim LMAO.
Girl 1: Also his beard is shit.

Girl 2: LOL! True.

by ---Ace--- September 19, 2020

Ksi

Kiss simon immediately

What is the definition of the word ksi
~ kiss simon immediately

by ShovinDeezNutsInYaface August 13, 2021

Ksi

The fatneek that we all know and love

The person we abuse on a daily basis (as a joke)

Ksi

Knowledge

Strength

Integrity

by Ahbaiyedeagen May 31, 2021

KSI

Lord Olajide Olayinka Williams Olatunji is British YouTuber,rapper.professional boxer and internet personality from London.His known as KSI and he is also part of the British YouTube group Sidemen.He is one of the best YouTubers the world has ever had,he has proved many people wrong,he beat Logan Paul twice,and shits on Jake The Cancer Paul.

Guy 1: Broo,did you see how KSI destroyed Logan Paul?

Guy 2: Yeah bro,KSI violated him.

by allowitfam February 27, 2021

KSI

An african youtuber/boxer/rapper orginated from England, Watford. But claims himself as a nigerian.
K="knowledge"
S="strength"
I= Intergrity
Famous quotes
Allow it fam, gangshit, for fuck sake man, you guys are pricks, shut up, kilode, akneehow, etc
Other Names:
Follabi, Babatunde, Sir Theodore the 3rd, fatneek

KSI: Ah ah, kilode, its nice to see you ah!
Tobi: Ah ah, my nigerian brother ksi!
____________
Harry: KSI is a fatneek

by The Aquarium Lad December 14, 2020

KSI

Fatneek

Quadeca: Tell me a joke
r/KSI: KSI has knowledge in his name.

by ksiolajidebtisafatneek February 13, 2023

KSI

KSI or JJ Olatunji is a black British internet star and musician who is part of a group called the Sidemen.

He is also a fatneek and Babatunde would kick the shit out of him in a fight.

KSI is a fatneek

by NInJaButInCAPS April 11, 2021