Don't swallow fruit or vegetable seeds unless you want to turn into a walking vegetable patch or orchard.
If you have a cold, eat chicken soup.
Don't make faces, but do slap people on the back when -they- make faces.
Saytrs travelling alone need to be careful or they will go blind before they see their hairy palms.
Don't stare into the sun.
Don't sit too close to all of those chimeric TVs.
Don't bring a mirror across with you.
Never ever utter the words 'It's over,' 'We've done it,' or any variation thereof, particularly in Nightmare Realms. This is virtually guaranteed to immediately rejuvinate ANY villain, no matter how thoroughly you've killed him.
Throw salt over your shoulder. Even if you think it's silly, for the love of the gods, just do it.
Don't step on cracks, unless you're really intending to commit matricide.
It never hurts to keep a few childhood rhymes handy, even if you're Unseelie. Childhood rhymes are almost uniformly morbid in content and make wonderful bunks while you're strolling through a scary dark forest.
Not all sleeping beauties are really sleeping....
Not all sleeping beauties were cursed by wicked faeries. Sometimes they've been cursed by good faeries, and for a damn good reason, too.
Ditto for Snow Whites. Don't pity them unless you have incontravertible evidence that they deserve it. And even then, don't put them at your back. The wicked stepmother is all a matter of perception.
Rakhshasas are NOT your friends. I don't care if you think they're cute--don't do anything that might release one. There's a reason why the naraka don't want to (*&^ with them....
Never ever try to use modern explanitative psychology on the place you're in. And especially stay away from Freudian interpretations.