Some Transylvanian traditions about vampires and related phenomena

'Tis the season and all that, so I thought it might be nice to share these with you. Courtesy of ar_boblad, about 15 years ago now I guess it must have been. Où sont les vampires d'antan?

• A crossbow bolt through the heart will stake a vampire.
• Cut off the feet of someone killed by undead, and they will not be able to walk if they become undead themselves.
• Dreams about vampires signify a poor harvest.
• Adulteresses will go deaf within the year.
• If you see a bat you should pray. This makes it fall asleep, then you rip its wings off.
• Vampires sleep with their eyes open.
• Holding ghouls under water under a bridge is the only way to kill them permanently.
• He who drinketh of alcohol then partaketh in the potato will surely suffer.
• A vampire can’t stand at a crossroads.
• A marriage on the first day of a century will produce love for eternity.
• Bury each tooth of a werewolf separately and under trees. If two teeth are together they can still bite.
• Dreams about a full moon signify change.
• Push a vampire down a well then sprinkle ashes down it and the vampire will implode.
• Hop on a grave and the person buried there will haunt you until your death.
• Never hold a funeral before 2 pm or disaster will befall you.
• Werewolves never get struck by lightning.
• Mime infuriates the undead.
• If you see a ghoul and it turns to stare at your heart you will die within a fortnight.
• Dreams about poor harvests signify vampires.
• If you see a black cat spit on it or bad luck will be yours.
• A door made of yew wood can’t be opened by a werewolf.
• Fresh sap on your hands can stop a ghoul’s approach.
• Werewolves can be killed by normal means on a new moon.
• A spike on your roof stops a vampire bat landing on it.
• If you get cut by a vampire’s fangs, wash it in holy water then hold a candle over it.
• Sprinkle a powdered ghoul’s thumbnail onto a field and it will flourish for five years.
• Open a ghoul’s grave at precisely noon and it won’t trouble you for as long as you live. (Or was it that it will trouble you?)
• Dreams about potatoes signify death.

(Unfortunately, most of these turned out to be inaccurate.)

Do you have any good ones to add to the list?