the scream

Then it began to move. It has to be an animal but not just any animal a nocturnal animal because why would anyone be awake in my house at this time of night. It had a pungent smell to it that made my nose burn like blue fire. I decided I would suss it out. Now with a peg on my nose with a vacuum cleaner in my hands walking down the stairs with crazy bed hair. I found myself at the bottom of the stairs turned looking at a mirror screaming at the top of my lungs. What exactly made me scream?