If you open it, close it
If you turn it on, turn it off
If you unlock it, lock it up
If you break it, admit it
If you can't fix it, call someone who can
If you borrow it, return it
If you value it, take care of it
If you make a mess, clean it up
If you move it, put it back
If it belongs to someone else and you want to use it, get permission
If you don't know ow to use it, leave it alone
If its none of you business, don't ask questions
If it ain't broke, then don't fix it
If it will brighten someones day, say it
If it will hurt feelings, keep it to your self