Going back in various mythologies is the idea that supernatural beings -- such as vampires, ghosts, demons, witches, what have you -- cannot enter into a home unless invited to do so. Often such beings will try to gain entrance by tricking a person into believing they are someone else. Traditionally, this trope applied to mythical creatures in general, as well as vampires. But there's a load of things that are supposed to invite them in, like putting new shoes on the table, or bringing white hawthorn into the house. Now you know. Examples of Vampire Invitation include: