It's no joke.

Husband to wife: "I've just been told that our postman has seduced every woman in our street except one".
Wife: "That will be Mrs Jones over the road".
Wife: "That will be Mrs Jones over the road".
http://www.vocalvoices.gripsky.co.uk/
http://www.vocalvoices.gripsky.co.uk/viewtopic.php?f=15&t=13653