Remember that pervy old grandpa from Jackass played by Johnny Knoxville? Now he has his own movie, and it looks like another awesome entry in the genre of real-life master trolling that Sacha Baron Cohen perfected. Trolling weddings? Check. Trolling funerals? Check. Shooting a kids ride through the front window of a department store? Supercheck. Bad Grandpa is coming to the silver screen, and he's still balls-to-the-wall crazy.