Mr and Mrs Twit are the horridest and stupidest and tricksiest and hairiest and noisiest people! Muggle-Wump the monkey and the Roly-Poly bird decide to teach them a lesson.
How do you outwit a Twit? Mr and Mrs Twit are the smelliest, ugliest people in the world.
They hate everything — except playing mean jokes on each other, catching innocent birds to put in their Bird Pies, and making their caged monkeys, the Muggle-Wumps, stand on their heads all day.
But the Muggle-Wumps have had enough.
They don't just want out, they want revenge.