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When Ricky (Desi Arnaz) discovers that he holds the "bonus buck" sought after in a radio contest, he generously plants the dollar bill (worth 300 dollars) in Lucy's purse, anticipating the thrill when Lucy (Lucille Ball) finds it. Unfortunately, Lucy uses the bill to pay the grocery boy (Don Garner) -- who in turn passes the bonus buck along to Ethel (Vivian Vance) as change. A battle over possession ensues, leading to the bill being torn in half, with the Ricardos and the Mertzes intending to share the prize (or at least that's what the couples tell each other!) One thing leads to another, and by episode's end, Lucy's half of the bill ends up at the local laundry, where in her zeal to retrieve the dollar Lucy is given the "starch treatment" to end all starch treatments.