the ghost in my bedroom

For over a week now, when I wake up there is a sizeable pile of what appears to be plaster dust on and around the left side of my pillow. I'd like to attribute it to the tiny crack above my bed, but the proxemity of the dust to the crack isn't logical.I have always had ghosts trying to make me shit my pants by being annoying/creepy, but this is just retarded. Don't they know I have asthma?! dear retarded ghost, you suck. please stop.