Only Fools and Horses: Licensed to Drill (1984)

As Rodney and Grandad watch a war movie, Del Boy who had earlier returned from the cafe with a magazine about oil and is now reading it while lying on the couch, begins educating his younger brother and grandfather, explaining all the products which would not exist without oil. He then insists that they watch a short film being shown on TV about the Maureen off shore oil rig. When the film is over, Del goes to bed after insisting that Rodney reads the magazine in time for an important business meeting which will occur the next day. When Rodney wakes up the following morning, he finds a strange man in the flat, and it emerges that Del has just concluded a deal with him. He explains that he has bought an oil rig for £400, intending for them to drill for oil themselves. However, Rodney points out to a seemingly unaware Del that offshore oil rigs are located hundreds of miles offshore (not hundreds of yards as Del appeared to presume), and Del suddenly realises that he has been conned. Del attempts to give chase to the mysterious man he called "Paddy" who has, in Rodney's words "done you up like a kipper" but is prevented from doing so when Rodney informs him that the van is out of petrol. On this ironic note Del, jaw agape, stares into the camera before attempting to throttle his younger brother as the credits begin to roll. We briefly see the "Paddy" character smoking a cigar and laughing triumphantly in his car outside the flat before he drives off.