So there's a guy on Oxford Street in London who's always shouting through a PA system from his shop that they're "closing down tomorrow" and all their crappy perfume is on sale. I walk past this place every day and I realised that just as he opens the shop, two people with sullen expressions turn up, say a few words to him, then stand in front of him with fake smiles pretending to offer him money for stuff. It's a typical East End wide boy scam. I know there's a word for people who do this - I'd read it somewhere but have since forgotten it. What is it?
This person is called a shill:
The Oxford English Dictionary notes that this term was first used in 1913, and is chiefly North American. Older terms to refer to these decoys from the OED include: