Bad Grandpa tries to do something different with the Jackass formula, by structuring its pranks around a storyline. Ultimately, though, it's neither here nor there. Not surprisingly, the plot exists just to get the film from point A to point B. However, the gags don't quite pack the same punch as earlier films either. It'll keep you chuckling throughout -- that's for sure -- but it probably won't leave you breathless from laughter. You may still enjoy it if you're a Jackass fan, but you'll have a better time with the earlier films.