KSI

Fatneek

KSI is a fatneek.

by nuk3d July 15, 2021

Ksi

A arrangement usless boxer who beat Logan Paul by a bad call

That’s guys head is as big as ksi’s

by Rhehrbr September 30, 2020

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

An Egotistical knobhead

“Oi that KSI is such a cunt Yano”

by kenningtonbaby November 30, 2024

Ksi

Knowledge strength integrity fat neek big forehead a man of many personality’s ksimon sidemen

Ksi is our fat neek

by Pengest of the pengest November 14, 2021

KSI

Ksi-noun(Kay-S-eye) The dark skined ,bandana wearing ,5'11 feet Youtuber who will beat Jake Paul silly this coming year.
Ksi-verb(Kay-S-eye)To beat a person like the Youtuber KSI beats bearus

Yesterday a Ksi (noun) pulled a Ksi(verb) on someone who tried to attack him.

by The one who shall not pass July 27, 2020

KSI

A raper who is very successful and make YouTube video and is a professional Boxer

Hay that is KSI from YouTube

by Tux_YT December 9, 2019