KSI

Short form for 'kiss simone immediately'.

Has a 12 inch d*ck. Overall a sexy beast.
And the goat youtube boxer. And a damn good rapper.

Heyy look who's here 'ksi' omg he's the best.
I wish i could learn boxing from him!

by Dammmmmnboi November 25, 2021

KSI

A black guy who can't rap for shit.

-Have you heard of KSI???
-Yeah, isn't he the guy with a big ego and an even bigger forehead?

by GianCM February 21, 2018

Ksi

Absolute knob

You are a Ksi

by Huffy I’ll June 12, 2022

KSI

KSI is our beautiful fatneek. He has more tits than your mum, and he beat logan paul

KSI is also ALLOW IT MAN

by kim tyung November 22, 2021

Ksi

A black neek who can’t grow a nice beard

Ksi a strong black neek who beat Logan Paul but just can’t grow a nice fucking beard.

by Hamster shit October 26, 2020

KSI

recently discovered as 5'9" and not 5'11".

Ksi is a midget

by Smerter September 27, 2020

KSI

KSI stands for Knowledge, strength, integrity

KSI is a lad / top shagger

by j.d_joe November 13, 2019