BOS BOC, my 6 yr-old is the Grim Reaper this year.
My 4 yr-old is a fuzzy white bunny, so I just had to show them the relevant scenes from Holy Grail. They loved it!
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Tim the Enchanter: Follow. But. Follow only if ye be men of valour, for the entrance to this cave is guarded by a creature so foul, so cruel that no man yet has fought with it and lived. Bones of full fifty men lie strewn about its lair. So, brave knights, if you do doubt your courage or your strength, come no further, for death awaits you all with nasty, big, pointy teeth.
Tim: There he is!
King Arthur: Where?
Tim: There!
King Arthur: What? Behind the rabbit?
Tim: It *is* the rabbit!
King Arthur: You silly sod!
Tim: What?
King Arthur: You got us all worked up!
Tim: Well, that's no ordinary rabbit.
King Arthur: Ohh.
Tim: That's the most foul, cruel, and bad-tempered rodent you ever set eyes on!
Sir Robin: You tit! I soiled my armor I was so scared!
Tim: Look, that rabbit's got a vicious streak a mile wide! It's a killer!
Sir Galahad: Get stuffed!
Tim: He'll do you up a treat, mate.
Sir Galahad: Oh, yeah?
Sir Robin: You manky Scots git!
Tim: I'm warning you!
Sir Robin: What's he do? Nibble your bum?
Tim: He's got huge, sharp... er... He can leap about. Look at the BONES!
King Arthur: Go on, Bors. Chop his head off!
Sir Bors: Right! Silly little bleeder. One rabbit stew comin' right up!