A high, easy to catch flyball or pop-up. There are numerous explanations for this odd baseball expression, first recorded in the early 1920s. Paul Dickson’s excellent The Dickson Baseball Dictionary (1989) discusses several, including the theory that the phrase comes “from the old time grocery store where the grocer used a pole or a mechanical grabber to tip an item, such as a can of corn, off a high shelf and let it tumble into his hands or his apron, which was held out in front like a fire net.” The term is also used outside of baseball today, meaning any easy accomplishment.