chatter bump
n.— «One of her most unusual assignments was to build a road with all the wrong bankings. She created a four-mile nightmare of incorrectly canted curves, chatter bumps, potholes and a hundred other hazards found on rural highways. It’s [sic] use was to test the handling qualities of cars under the worst possible conditions.» —“Hoped Fashion To Be Her Field, But She Designs Roads” by David Chute in Highland, Mich. Vidette-Messenger (Valparaiso, Ind.) July 30, 1969. (source: Double-Tongued Dictionary)
Further reading
She sells seashells by the seashore. Who is the she in this tongue twister? Some claim it’s the young Mary Anning, who went on to become a famous 19th-century British paleontologist. Dubious perhaps, but the story of her rise from seaside...
A hundred years ago, suffragists lobbied to win women the right to vote. Linguistically speaking, though, suffrage isn’t about “suffering.” It’s from a Latin word that involves voting. Plus: military cadences often include...