What came to my mind was the teenage daughter who jumped out of the closet and said ‘BOO’ to her father to surprise him. He shot her dead with a .357. http://www.nytimes.com/1994/11/09/us/startled-father-fatally-shoots-his-daughter.html
How about it Balding? Do you live alone or do you have any relations/fellow lodgers who need to worry about you ventilating them through closed portals/blankets/bead curtains?