When you hear the title "Dirty Grandpa" you can think something similar to bad grandpa. But actually opposite, an overprotective parent turns into wild old character in a humorous way. To young audiences, it may sound as what they are looking for. But conservative viewers may find it offensive. I laughed my butt out for crying out loud, I personally loved it, not all the jokes are great, but it was pretty good fun at most of the scenes, I would like to rate it slight more than you- 7.5/10