12. Serena Williams Is Salty
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Serena Williams lost her cool and her U.S. Open semifinals meeting with Kim Clijsters in 2009. When a lineswoman called a foot fault during Williams’ serve, the tennis superstar unleashed on her: “I swear to God I’ll f***ing take the ball and shove it down your f***ing throat.” Holding match point, Clijsters was awarded the winning point for her opponent’s outburst. Williams was fined $82,500.