This one is not an official rule in my class. It came close but one of my students plagiarised and then quoted this 'rule' as an excuse. So it got changed to 'Just because you can, doesn't mean you should'.
The wallpaper version is available at the preceding link.
Today's Gratitude Item: Daylight saving! I love the fact that it gets dark later now. Not only does it mean that winter is officially 'done' - it also means being able to walk outside 'later' if desired.