KSI

Someone who is not what they are or Fatneek
KSI stands for Kiss Simon Immediately

Your are a KSI because you were a Fatneek

by Neutralice March 13, 2022

KSI

Fatneek lookin ass. He a snake, he steals $100 k from Vik and gets abused by his reddit (which is totally fair). He is also a secret gay who had sexual affairs with his secret boyfriend Simon Miniminter behind his TV.

Hey, im a KSI. (meaning, im a snake)

by memebot_34 October 13, 2020

KSI

A person who has a massive forehead, shit hair, fat tits and tiny dick. Also they are always under six feet (height) and have a god complex.

Gosh! Jimmy is such a KSI!

by Rwayne the dock Johnson August 18, 2020

KSI

A badman

oladeji Olatunji/ BabaTunde/Nightmare/Miley Cyrus's fadda(father)/KSI

by ItzRuhan786 July 6, 2019

KSI

A black youtuber nigga with huge fore head that is part of the Sidemen

I am a fan of KSI

by nibba360 November 26, 2019

KSI

Ksi is a nigga mostly known for beating up his brother for fun. He hides his insecurities under his bandana and is always boxing.He is also friends with Randolph who is a fat fuck.

Yo is that KSI that nigga that’s friends with that fat fuck
Yes he also beats up Deji for joy

by BackUrMashAndBopWitADifrentSau May 2, 2019

KSI

KSI is the equivalent of a fatneek with a big forehead.

KSI is a fatneek 😳

by TommyShelbyInnit July 7, 2021