Dirty Bertie's facing the shame of losing a dare with Know-All Nick and having to wear his pants to school, playing the part of the dog in the local amateur dramatic society's production of Oliver! and taking Whiffer to Royston Rich's birthday party, where Whiffer leaves a very unwelcome present Bertie drags a reluctant Whiffer to dog training classes, stink-bombs his sister's sleepover and rebels against Miss Beansprout's all-new healthy school dinners More revolting stories about the world's grubbiest trouble magnet