It's a real thing, if Bill Bryson is to be believed, although he never elaborates on its precise nature: https://www.independent.co.uk/arts-entertainment/bryson

It's a real thing, if Bill Bryson is to be believed, although he never elaborates on its precise nature: https://www.independent.co.uk/arts-entertainment/brysons-america-my-last-junk-food-binge-drove-me-to-crispbread-1194635.html https://www.independent.co.uk/arts-entertainment/brysons-ame...