There are some pacing issues, and too many plot turns are easy to spot coming. But, on the whole, I think I enjoyed it.
At the same time, for a comdedy, this movie is oddly unfunny. It's not like there are a bunch of jokes that are just missing for me, or evenĀ a bunch of situational humor that didn't work. There just wasn't a very large attempt made at making the movie funny.
Also, wierdly dark... The subject matter is just consistantly unpleasent. Not lin the way the first two were, with gross out/shock comedy, but just unpleasent.
IDK... maybe go see it? or don't.