Oppai Day 

Nation Holiday where every women has to send their oppai to every man they know.
It is held on the 12th of April for unknown reasons.

"hey, it's soon Oppai Day"
"Yeah, ikr, I can't wait"

Oppai Day by Almoss April 7, 2022

Oppi King Day 

Oppi king day is at jan 20 where you respect oppiside for a whole day no negativity

Omg its oppi king day i love him so muc he inspire to be a youtuber

Oppi King Day by _popsicllletwinkk34_ January 15, 2021