If you open it, close it.
If you turn it on, turn it off.
If you unlock it, lock it.
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 how to operate it, leave it alone.
If it's none of your bussiness, don't ask questions.
If it aint broke, don't fix it'
If it will tarnis someones reputation, keep it to yourself.