At my work, we have a pen-board on the wall where we write how many applications we've processed each hour. The target is 10 per hour, although 12 is expected.
I managed 9 one hour, and decided to write it up discreetly so it wouldn't be noticed. Unfortunately, my heart demanded that I do what is expected, and as such I went back up and drew a circle around the 9.
When one person asked, I said it was an in-joke. That seemed to satisfy them.