Disappointing but not awful -- has its moments but not funny enough for the running time

Rating: Null/10 (21 June 2015)

Okay, so I thought this was going to be at least good enough to watch, considering how it had lots of good reviews. The trailer meant the movie looked alright to watch due to the mood (I didn't think anything was particularly funny in the trailer, though). However, it was not that good. The characters say lots of phrases and get into lots of situations, but they frequently felt kind of rushed and forced. Most importantly, a lot of those weren't that funny, some due to falling flat, but simply due to not being funny. There WERE occasional, much funnier responses, phrases, or situations, such as when Ron says something is an optical illusion, but that may probably be the only hilarious part of the movie. There are others that were reasonably funny, but there weren't enough of them.
The reason I'm not being too harsh on the review is that the movie wasn't awful. It really wasn't. It was just disappointing, and probably not worth watching, except for a few funny scenes. The occasional funny jokes, as well as the characters saved this movie from being any worse, but they didn't make it great.
Pros:

Some funny jokes

Good character development

Slightly funny for many parts

Cons:

Most of the jokes weren't that funny and felt really forced

The jokes frequently fell flat, worsening the quality of the jokes

Overall, I rate this a 5. This had me grinning a fair amount of the movie but not actually laughing. But some jokes had me laughing. Just some. But not that enjoyable.
It has its moments, but for a movie with all these cameos and stars, it should be much funnier. The jokes may be consistent, but I felt they were generally very slightly funny. However, I felt that they weren't funny enough to make the movie worth watching, as they only had me grinning, and I forced myself to laugh most of the time. There were some LOL moments, though (but only 1 or 2).
It had its moments, but it was overall disappointing and not worth my time. 4