Passive aggression. Road rage. Snarky tweets. Queue-jumpers. Idiots who are #justsaying. Fat shamers. Victim blaming. Furious waitresses who refuse to sell you a hot dog... We are ruder than we've ever been.

In this incisive and very funny book, Danny Wallace investigates the new wave of rudeness that threatens to overwhelm us. He travels the world, visiting our rudest critics, interviewing psychologists, psychiatrists, bell boys, cab drivers, bin men, barristers, politicians, a limo driver called Jose and at least one expert in cooked meat production. In doing so he uncovers the hidden truths behind what makes us rude, whether it can be caught, and how one small moment of rudeness-like being declined a hotdog-can snowball into disaster.

From the jihadist who launched a blistering attack on the bad manners of his fellow ISIS militants, to the mayor in Bogota who recruited an army of mimes to highlight inconsiderate driving-this is a very funny and powerful exploration into the way humans work and why it is surely time for an anti-rudeness revolution.