KSI

A person who says they are taller than they actually are (Erin)

"I'm 5'2" "Everybody knows you are 5'0 stop being such a KSI"

by iliterallydontknow June 24, 2021

KSI

He is a monkey

Omg look who’s in the tree in the jungle it’s KSI

by Wiener5556678 August 14, 2019

KSI

A guy who thinks that its weird to get hyper in 2021 because he is too cool.

WOW. GET HYPER. MUCH CRINGE.

- KSI 2021

by XX_POGSTAR_XX February 19, 2021

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 cunt/backstabber/coon

person: ksi is such a cunt

by NIMPROD April 18, 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