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The children's game "Red Rover" has its origins in a pagan ritual that dates back to the 16th century. According to manuscripts of the time, participants in the ritual would chant and make sacrifices to a demon in charge of shepherding souls to the afterlife, in hopes that their loved ones could return from death. Grotesque illustrations of the demon would sometimes accompany written accounts of the ritual, but the demon was never given a name; it was referred to only as "the Red Rover."

There are seven words in every Gideon's Bible - y'know, the one they stuff in every hotel room - that can't be found in any other bible. If you repeat those seven words to yourself while grasping the doorknob to your room, the door will open to any hotel room in the world. Of course, if you want to control where you're going, you'll need to know the Gideon's Key - one more inserted word, unique to each copy, that acts as an index for each room.