koro-sensei 

a yellow octopus teacher who destroyed the moon bc hes silly

Person 1: Omg what happened to the moon?
Person 2: lol that was koro-sensei. hes so silly

koro-sensei by Osamu Dazai Kinnie February 13, 2022

Koro sensei 

A name given to the yellow fictional creature in the Anime/Manga Assassination Classroom

I dont want to kill Koro Sensei

Koro sensei by Online Persona March 24, 2019

Koro Sensei 

speedy ass hentai protaganist

I want Sebastian to Koro Sensei my ass

Koro Sensei by FloBros123 January 31, 2021

koro sensei simp 

degenarates who spend their lives jacking off to an anime octupus because they are discord mods and cant get bitches on their dick

ew a koro sensei simp, lets runso we dont see them make thirsty tweets

koro sensei simp by InfinityYT March 8, 2022

KoroSensei

A name given to a yellow octopus with a big smile teaching students to assassinate.

Good morning korosensei.

KoroSensei by Dr. Inkotopus May 14, 2018

korosensei

tentacle porn actor who works as a teacher and tries to destroy the earth even though he put a huge asshole into the moon already

you're a korosensei if you work for donald trump

korosensei by lmaolmaokkk June 17, 2016

korosensei

also known as axl or death

ih dude look! its the pornstar korosensei

korosensei by lurker-kun September 19, 2017