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- n. An easily caught fly ball
The phrase, first used in 1896, makes reference to a long-ago practice where a grocer would use a stick to tip a can of vegetables off a high shelf, then catch it in his hands or outstretched apron. Note: the reason a can of "corn" is referenced and not a can of green beans, pumpkin or spinach is that corn was the best-selling vegetable and so was heavily stocked and on the lowest shelves, making it the easiest of the can "catches" for the grocer. (See Seattle Post Intelligencer - Sports Answer Guy article) (Wiktionary)
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