A person who makes his living collecting discarded betting tickets at horse racing tracks, then going through them looking for winning slips that were accidentally thrown away.
Among Irish Republicans in Northern Ireland, a "stooper" is an insult for a Catholic who isn't sufficiently nationalist; who is suspected of harbouring pro-British sympathies; who "stoops" (bows and scrapes, kowtows) to the Queen of England, and submits to the hegemony of the Unionist ascendancy.
Usually it just means somebody who supports the SDLP instead of Sinn Féin, but since the Good Friday Agreement the ultra diehards have started to regard Shinners as just another set of stoopers.
A shit that comes out so smoothly it hits the water without a splash. The pleasure does not end there. Said turd slides around the u-bend with such grace it hardly leaves any need to flush.
Just been for a man-dump. It was a slooper so slipped out nicely with no mess.....