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

FATNEEK with a big forehead who gets bullied by his fans. Also is a rapper with his amazing song Lamborghini.

Fan1- yo it’s ksi

Fan2- omg yeah how did u see him so quick

Fan1- I can see his massive forehead from a mile away .

by R5by888 November 25, 2021

KSI

fatneek that is “bulking”

Person 1: Who’s KSI?

Person 2: Oh hes the one that is “bulking” and always says “ALLOW IT MAN” and also says “RAAAA”

by oktivaa November 26, 2021

KSI

They guy who beat Logan Paul in a split decision

KSI is a fatneek

by KSI is a bosssssss April 19, 2020

KSI

If you know a KSI then they would most likely ruin your family at christmas and never get invited to a roast ever again.

My friend KSI fucked his mum at christmas and was never invited back home.

by dead boyyyyyy May 21, 2020

KSI

Has dropped a solo album and is going to go baldski

Me: Have you listened to KSI's album yet.
My friend: Yeah, i cant wait for him to go baldski LMAO

by Jandol May 26, 2020

KSI

Knowledge, Strength, Integrity, a man the beat Logan Paul and has a very limited vocabulary.

Oi, do you know KSI?
Oh yeah, the guy that always say "fuck you, cunt"?
Yea, thats him.

by lilxuxo June 11, 2020