After discovering a stash of adult magazines, Sally decides that the boys are sex mad. When David suggests they meet his daughter at the weekend, she decides to give them a talk on love and babies - but they draw the completely wrong conclusion!

The omens are not good for Sally and David when they go to buy a ring and witness a young couple rowing before breaking off their engagement! Later, at a smart restaurant, a couple celebrating their anniversary start rowing and, to top it all, David announces that he doesn't want a church wedding!