Book excerpt: Mair Weegie Wan-Liners is the brand new volume of Glaswegiana by Ian Black, he of the many broken noses, of the casual insults, the slanders and the outright naked threats repeated in the houghmagandie-ridden howffs and the haud-me-doons of his native city. You will laugh, you may cry, you will repeat them - but always use these words with care.