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?"
"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."
A small party of people who roam the neighborhood looking for parties to attend. These parties will often stop by your house and drink all your alcohol or smoke your weed, as they have taken advantage of you only for your resources, then move on to the next house.
Oh shit Joe, all those people just left. They weren't here for very long.
Darn we just got hit by a drive-by party.