Dave and Steve are in a pub in Manchester, having a half pint each and skint. A bloke walks in with a lovely ten kilo salmon, he hands it to the landlord who gives him £20, Steve asks "where did you get that from? The fella said there's a steam that runs by the pub and his mate dangles him over a bridge by his legs until he sees a fish, he grabs the prey and his mate drags him back by his legs, easy money.
Steve and Dave go outside, find a bridge and Steve dangles Dave over the side. Two hours later, they're still there Steve's arms are killing him, he's knackered and ready to give up, all of a sudden Dave shouts "Steve, pull me up quick" Steve says, "thank fuck have you caught a fish? Dave replies "no, there's a fucking train coming straight at me".