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|summary=The most revoltingly rotten family to grace children's literature since Roald Dahl's ''The Twits''.

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Mr and Mrs Grunt are a rather despicable couple. They are dirty and violent and always throwing things at each other. They eat things like dead badger scraped off the roadside, and like using ''very rude words''. But as disgusting and depraved as they are, they are not evil. They are more like overgrown, badly behaved toddlers who haven't seen a bath in years. They fight and throw things, but honestly seem to care about each other as well on some level. They live with their adopted, or more accurately kidnapped son, who doesn't seem to notice that wearing dresses is unusual for a boy, and Mrs Grump has taken the trouble to dye them blue. Rather than a house they live in a caravan that looks like a cross between a camping caravan and an outhouse, and is pulled by a large elephant, with two donkeys riding in their own trailer behind.