Mayhem and Mischief: 3 books in 1 by David Roberts
Dirty Bertie - the boy with nose-pickingly disgusting habits - in this bumper book of nine revolting stories from Burp!, Yuck! and Bogeys! Join Bertie as he stages a rebellion in the school dinner hall, has a sickly time at the fairground, and tries to give up his lifelong habit of picking his nose!