How Am I Getting Home to Limerick?

When men worked at the airport, they might go to one of the many bars in the airport and drink until night time. A work colleague pulls up and says, mick, would you like a lift home? And mick says, yes. While mick's in the back of the car, he's grateful that his friend has given him a lift home. But mick also notices that he's smoking a cigarette. He rolls down the back window to flick the cigarette out, but the car is moving quite fast so as he does this, the cigarette goes out the window, but then flies back in. The trajectory thats the flaming cigarette bot took was that it came back in the