One day a rumour went round that there were vampires in our school. Supposedly a couple of kids were known to bite each other on the neck, and a bite went wrong and hit a carotid artery (never verified). The police showed up for something completely unrelated but it added to the drama. The whole school went nuts, and by lunch time, posters of garlic and the cross were posted throughout the hallway. The next day kids were kept home by their parents!