Boogieman Rug:

Sheldon: As a child, my boogieman wasn't so colorful, and it wasn't a man, it was an elderly lady who had most of her body burned. She liked coming at me and staring at me at night. She had a child who was burned to, and who did the same. I wish my boogey"man" looked so pretty.

via Neatorama.com

(Click the pic to check it out!)