Edvard Munch; “Vampire”

They say a Vampire can’t enter your house unless you invite them inside.

I don’t know whether it’s true, on account of I don’t know if Vampires are a thing.

But I recognize a rule that is good and true when I hear one.

I always hear this or that person complaining about how such-and-such is,

“…living in my head, rent free.”

Well, who invited them?