Opposite Day 

Rooted in playground tradition. A fictional holiday, in which everything you do or say means exactly the opposite. Often used at the end of a sentence to negate what you just said.

"You look nice.... on Opposite Day!"

Opposite Day by Dr. Michael yates January 17, 2005

Opposite Day 

A fake holiday where you do exactly the opposite of everything.

Obviously is wrong in itself, because if everything is opposite, than opposite day cannot exist. And no, it can't go the other way, obviously, since there is no opposite day.

Try this logic with 4th graders.

4th Grader: IT'S OPPOSITE DAAAYZORZ!!
Smart Person: If it's opposite day, than that means it's NOT opposite day, dumbass.
4th Grader: OMG WTF YOU MEEN NERRRD! HAHAIDIOT.

Opposite Day by A guy. March 31, 2005

Opposite Day 

Opposite Day is a fun "game" played on another. You never know when this day takes place, but when it does, everything you say has the opposite meaning of what it would on a normal day. The quest is on to figure out when this day actually happens, so you can safeguard yourself from its horrors.

H-bird: Imma snaxe you, you snaxe
*readies sticky hand*
Snaxe: Haha, It'sssss Opposite Day today, you can't snaxe me!
H-bird: Gosh Dangit.

Opposite Day by Hecretary Bird July 26, 2020

Opposite Day 

A day where everything you say means the opposite of what it normally would. Kinda juvenile, but its fun too.

OMG It's opposite day, so I'm gay, Tony Blair is a fascinating and compelling leader, and my g/f is flat...

Opposite Day by theoneandonlyhazer July 23, 2005

Opposite Day 

Opposite Day (n): Today is opposite day, so you must say no for yes and yes for no. It's also the only day you go back and stay back.

Opposite Day is the day where everything is reversed. But if opposite day is opposite day then shouldn't opposite day be opposite to opposite day? Meaning that everything that is opposite is opposite because opposite is opposite of opposite

2nd Grader: Hey student(teacher in this case), did you know today is opposite day.
Teacher: No, I didn't. But if today is opposite day little Timmy, shouldn't it be opposite?
2nd Grader: Wtf does that say?

Opposite Day by SenshiButaniku April 25, 2019

Opposite Day 

When it’s like how it is, but opposite.

Aviel: *hitting Ethan with a belt*
Ethan: *blindfolded*
Matthew: It’s like Opposite Day!

Opposite Day by Sanjobanjo August 4, 2019

Opposite Day 

(march 27th! or so i've heard hehe.)

a day when "no" means "yes" and "shut up" means "keep talking" and etc..u do the opposite of what someone tells u to do.say the opposite things.blah blah blah.

a conversation between a girl & her boyfriend when theyre hugging on opposite day:

Girl: dont kiss me
Boy: *kisses her right on the lips*

Opposite Day by chass i licious July 22, 2005