I think something is living in the walls of my house. There are all these freaky scratching noises. Sure, I was well aware that my house is haunted, as occasionally doors will open and close without anyone being around, but now I keep picturing these evil rabid wombats to come bursting through my walls, foaming at the mouth and out for my blood.
Note to self: Imagination goes rampant when one is bored silly with a nasty cold.