An old person who is lying on the floor in a pile of poop because they have fallen and can't get up to call 911 and nobody is around to help them. Sometimes they can spend days there and they will defecate while waving their arms and legs around in an attempt to get up which will spread the poop around in the shape of an angel.
"Hey you know that old lady down the street whose husband died a few years ago?"
"Ya?"
"Well I saw the paramedics over at her house so I asked them what was up and they said that she had been a poop angel for the last two days."
Upon the conclusion of the bowl movement, one reaches to remove the inevitable poop material, only to find the toilet paper, as if by divine intervention, is purewhite or nearly white.