If you open it, close it.  If you turn it on, turn it off.  It you value it, take care of it.  If it isn't broken, don't fix it.  If you break it, admit it.  If it's your fault, apologize for it.  If you make a mess, clean it up.  If you move it, put it back.  If it's not yours, don't take it.  If it belongs to someone else and you want to use it, get permission. 

If you borrow it, return it.  If you don't know how to operate it, leave it alone.  It it's not your turn, wait until it is.  If someone else is speaking, wait until they finish. 

If it's none of your business, don't ask questions. 

If it's not true, don't say it.  If it will tarnish someone's reputation, keep it to yourself. If you’re happy, sing about it!

It if will brighten someone's day, say it.If you feel like you’re going to sneeze, cover your mouth.If it’s none of your business, don’t ask questions.If you can’t control it, don’t worry about it.If you need a friend, be a friend.If you hurt someone’s feelings,apologize.If a bully is bothering someone, get involved.