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The Big Sweep is the tenth issue of the Futurama series of comic books.
After an ash-fall on NNYC, which is rather like a snowfall but with meteor ash instead of being fallen precipitation from clouds as frozen ice crystals, Scruffy discovers some smooth white rocks and decides to teach Fry, Bender and Leela the sport of "swurling" where upon you move a rock into a bullseye on ice. Yes, somehow falling ash automatically freezes the water too, but anyway... Scruffy discovers the three are all naturals. But he's not the only one, and a washed-up swurling coach named Vic Lebruteski decides to take the whole crew under his wing for the next Olympics. Leela doesn't quite trust him though.