I used to send fake Western Union money grams to those scammers. It was a riot reading their responses when they asked where there money was especially when I wrote back saying either they or their representative picked up the money already.
There was a guy who jerked these eople around something fierce. He claimed he sent the requested money to a Nigerian city/town hundreds of miles from the recipient. He then get an email saying the guy made the trip and found no money. Then the "pigeon" would say , "Oh I meant the OTHER city." a hundred miles in the opposite direction.
He even played with a female scammer by asking for identification at one point, which required her to send a photo of herself with a pair of panties on her head. He posted a copy of that beauty.