I took a bunch of my son's friends for his birthday. 5 of them enjoyed, 2 didn't especially. My husband and I both struggled to not doze off. It's okay but not a film an adult would ever really enjoy (not like a Pixar film, etc.).
I thought it was very entertaining. So did my husband. No doubt. It is funny. The characters are great and the film was sort of surprising in many ways. If you liked Knocked Up, you will like this film.