" Making matters riskier: bed pans! “The notorious frequency of sudden and unexpected deaths of patients while using bed pans in hospitals has been commented upon for many years,” wrote the Cincinnati doctors. Notorious enough for a term to be coined: “bed pan death.” Lying flat is as counterproductive a posture as squatting is productive. Squatting passively increases the pressure on the rectum. It does the pushing for you. It "

― Mary Roach , Gulp: Adventures on the Alimentary Canal