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Gutterballs is a 2008 Canadian rape-and-revenge slasher comedy splatter film written and directed by Ryan Nicholson. The plot is centered around two rival teams at a bowling alley, Xcalibur Bowling Centre, spending a night after-hours to play against one another. Following a planned sadistic rape against one of the teams members, everybody on both teams begins to get brutally killed one by one by an unknown killer the following night. imdb.com