A 2013 tumblr April Fool's Day prank for which thousands of tumblr users changed their icon to the same photo of Misha Collins and endlessly reblogged said photo and manipulated thousands of gifs, soundfiles, posters, photos and screencaps to contain reference to the OVERLORD. All tumblr users not affiliated to the Misha's minions or Supernatural fandom were extremely alarmed but unable to escape.
Misha #1: ALL HAIL THE OVERLORD Misha #2: PRAISE BE TO MISHA
Misha #3: REBLOG FELLOW MINIONS
Misha #4: REBLOG ALL THE MISHA
Misha #5: THE MISHAPOCALYPSE IS NIGH
Random blogger: HELP WHAT IS THIS I CANNOT ESCAPE
Random blogger #2: I HAVE BEEN CONVERTED VERY FUN APOCALYPSE 10/10 WOULD RECOMMEND
The event on Aprils 1st, 2013, when all the Mishamigos (and Misha's Minions) changed their icon/avatar to a specific picture of Misha. This has been spread to many websites, and has elicited an interesting reaction from non-mishas. On this day, every Minion and Mishamigo is Misha, and must refer to each other as such. Gender (or lack of) and race do not matter.
I am Misha.
You are misha.
We are all Misha.
Misha: Greetings, Misha.
Misha: Good day, Misha.
Misha: Do you have news on the Mishapocalypse, Misha?
Misha: Yes, in fact, I do, Misha. It is going well. We have converted several billion people/accounts to Misha.
Misha: Good. Continue with the good work, Misha.