Is anyone really safe when they're on set?
Not if stars like George Clooney or Chris Pratt have anything to do with it! Click through the gallery to see some of the most epic pranks celebrities have pulled while they were working on a new project.
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“I got a bumper sticker in the shape of a pot plant, that said, ‘F--- cops,’ and I put that on the back of his car,” he said. “Because there’s no way you’re not getting arrested with that.”