1 definition by GabeDuncan

Opposite Day. This day falls on: September 26, where you can say what ever you want, but it mean the opposite.
You: “hey wanna go on a bike ride?”
Sister: “no”
You: “so you do?”

Sister: “NO”

You: “but it’s Opposite Day!”
Sister : “fine let’s go”

Sister; *goes on bike ride with you*
by GabeDuncan September 26, 2021
Get the Opposite Day mug.