preview.redd.it/…

imgur.com/a/UWQut9j

C'mon, why can't I remember how to do this?

There should be a button marked upload.

Next to the send button.

There should be.

Are you on mobile or desktop?

Desktop.

Huh. Maybe your computer is haunted.

I've been seriously considering that possibility for a while now. I'm getting a new one for next semester, so hopefully, I don't turn out to be this guy: