This is not so much the "sign" that was wrong, but me.
I got a survey in the mail from the post office about which services I use most, and one morning... before I put on my glasses... I glanced at it on the counter and thought one option was, "Flying Monkey Orders."
You know, the things from Wizard of Oz that scared the snot out of me as a little kid. I must admit my first thought was evil glee, like, "I can sic those on people through the post office?! YES!"
Then I realized it actually read, "Buying Money Orders."
Much more boring.