I know I've seen one floating around the internet and can't seem to find it.
It had things on there like 'You must bring us food if you come to see the baby' and 'if we ask you to run to the store, you shouldn't complain'. Each item also said something about that if you break the rule you don't get to see the baby.
We probably won't ever actually send one, but does anyone remember that or have a copy of it? Or, hell, did anyone you know do anything like that?