Ten Rules you must ALWAYS follow whilst babysitting the Potter/Weasley children:
A guide meant solely for the use of Potter/Weasley men
By Ron Weasley
NEVER feed James Every-Flavor beans before putting him to sleep. He will sprout tentacles smelling like the bean he ate.
DO NOT attempt to read Hogwarts, A History to Rose at bedtime. She has memorized the entire thing, and will recite the whole thing before sleeping.( Don't ask me how, she doesn't even know how to read) If you make this mistake, DO NOT try to leave. (Trust me, I've tried. The scars on my left arm are worse then the brain scars on my right arm.) The Weasley temper and the Granger brains are deadly together.
Leave Lily's diaper to her mother. She is a true skunk, and takes after my dear sister.
4. If you value your life, NEVER challenge Fred to a one-on-one game of Quidditch.
You will end up in 's with Bludger marks all over you. (Tried that one too, mate. My back's a living testimony.)
Unless you want to suffer the Veela temper, abstain from angering Victoire.
If Rose somehow manages to turn her hair blue do not attempt to fix it.
Lily can be quite violent when she really wants something.
Do not leave your wand lying within easy reach of James, as he will steal it and can generally later be found poking inanimate objects with it, trying to make them talk to him.
Telling Dominique that Auntie Ginny's hair is really a wig, whilst funny at the time, is not so funny when Nicky launches herself at Auntie Ginny and tries to pull it off.
10. Last, but not least, do not, under any circumstances, allow Rosie to become bored, as they can make her voice extremely high-pitched when she so chooses, and she doesn't seem to need to breathe as much as normal people do.