Bloody hell. lol
My friend Trixie, she had a life-sized cutout standee of Princess Leia that she used to drape a feather boa around; one day she put a bucket hat on its head, forgot clean about it and scared the crap out of herself the next time she went in her room.

Myself, the first few nights after I put that poster of Dr. Frank-N-Furter on the ceiling, I had a couple of alarmed semi-awake moments.