Which 2006 British-American mockumentary comedy film was Bad Grandpa a reminiscent?
Jackass Presents: Bad Grandpa:  "Bad Grandpa" has a loose narrative that connects the stunts and pranks together (in a manner reminiscent of "Borat"), as opposed to the three original "Jackass" films which did not have a story. Borat:  Cultural Learnings of America for Make Benefit Glorious Nation of Kazakhstan (or simply Borat) is a 2006 British-American mockumentary comedy film written and produced by British comedian Sacha Baron Cohen who also plays the title character, Borat Sagdiyev, a fictitious Kazakh journalist travelling through the United States recording real-life interactions with Americans.
Borat