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| 6 of 10 After getting ''Punk'd'' by a fake fight earlier in camp, Carroll returned the favor and surprised the Trojans over the weekend. The USC coach had legendary singer/songwriter Bill Withers (inset) talk to the team posing as an NCAA representative before he revealed who he was and got the team to sing Lean on Me in unison. As long as Carroll never enlists the help of Ashton Kutcher, he can ''Punk'' his team as much as he wants. Text: Arash Markazi/SI.com Photo: AP Latest News
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