Sina: Good morning.

Cass: Bad morning.

Sina: ???

Cass: I really meant good morning, but I said bad morning. I said the opposite of what I actually meant.

Sina: Why?

Cass: It’s Opposite Day.

Sina: Hmmmm of course! So..wait…then it’s not opposite day.

Cass: Exactly. *wink*

Sina: Wait wait wait. So is it opposite day?

Cass: No it’s not opposite day, and that’s not *wink* the opposite of what I mean.

Sina: Riiiight. *wink*

[pause]

Sina: I’m confused.

Cass: Listen idiot: it is opposite day…and so that’s why I’m saying that it’s not opposite day.

Sina: So it is opposite day.

Cass: Yes.

Sina: Are you sure?

Cass: Yes.

Sina: Sooooooo [pause] you’re not sure.

Opposite Day should be defined well in advance of the calendar date, so that nobody questions it the day of. I propose February 29, when it exists.