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
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?"
"Well I saw the paramedics over at her house so I asked them what was up and they
she had been a poop angel for the last two days."