It's being called the worst senior prank ever!
There was hay all over the floor, writing on the walls, and shaving cream on the lockers.
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Senior pranks are right of passage at many high schools. Often it's all in good fun.
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For example, seniors in Santa Barbara had a mariachi band trail their principal!
But this one in Tennessee may be the worst prank ever; so bad that 100 students will not walk at their graduation.
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