KSI

KSI is when you have a big forehead and wears bandanas 24/7 to hide it, if you are relatable to that then you are a KSI
KSI stands for Killing Stupid Idiots

KSI is stupid

by KSI LGBT March 2, 2019

Ksi

A very toxic youtuber that insults older people. Calls women hoes.

Dude you seriously watch ksi he’s toxic

by @theamazingpaulbros on ig August 10, 2018

Ksi

A black person who couldn't win a fight against somebody who filmed a dead body wtf

Ksi is alpha male

by Blacksaregay November 14, 2018

KSI

A monkey

KSI is a monkey

by Wiener5556678 August 14, 2019

KSI

KSI means knowledge,strength and integrity

“Do you know what KSI stands for?”
“No what does it mean?”
“It means knowledge,strength and integrity.”

by Lannan Eaccot October 29, 2019

KSI

KSI is where you fuck to many people to be true. You brag about it to your friends and then you're friend doesn't believe you.

OII KSI wann come fuck?

by afef ae May 17, 2021

Ksi

Ksi means big forehead

Megamind is ksi

by Horny nigga lamp July 26, 2019