Kelly shift
n.— «Under what is known as the “Kelly shift,” adopted by the Fire Department in 1969, firefighters worked a 27-day rotation consisting of one 24-hour shift, followed by 48 hours off. After repeating that cycle seven times, they got six days off in row.» —“Lawsuit leads to long, complicated legal battle” by Ed Kemmick Billings Gazette (Montana) Aug. 27, 2007. (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...
In our earlier conversation about the term clam, which musicians use to refer to a “missed note” or “musical mistake,” Martha misspoke and said a similar term was used in rowing and sculling. Actually, as many listeners...