jack robinson

The phrase "jack robinson" is primarily used as an idiom to describe something that happens very quickly or suddenly. It is often used in the expression "in the blink of an eye" or "like a jack robinson," emphasizing the speed at which something occurs. The phrase originated in the 18th century and is believed to be derived from the name of an Englishman named Jack Robinson, who was known for his quickness or for abruptly leaving social gatherings.