Book excerpt: When the Scots tell a joke it's usually at their own expense. So this collection of gems pokes fun at just about everyone and everything from kilts and haggis through footie and thriftiness to Sassenachs, Teeries, and Glaswegians. Some of the jokes are old favourites retold, some are brand new, and some are a few specimens found on that internet thingy which have been massaged to make them almost funny.