..... I shocked the postman this morning by going to the door with no clothes on. I don't know what surprised him more - me being naked or the fact I knew where he lived.
It's from Tim Vine, a UK comedian. He won an award for that joke.
Though it all went a bit wrong. And this is a true story. In Scotland a brother and sister were caught having sex in a left (elevator) at a railway station.
The report on the case in one newspaper's online edition had a comment section. One of the comments was: "Incest in a railway station lift? That's wrong on so many levels!"