You have to go into a movie like this with pretty simple expectations. It's a bunch of simple jokes and will probably run a little bit longer than it should since it's more of a SNL skit than a full length movie. And that's exactly what you get. There were a couple of really good laughs but not nearly enough to warrant the whole story. Plus they did the obligatory storyline putting some heart into it that usually tones down the laughs.
I would still somewhat recommend people checking this out. The two leads are funny and play very well off of each other. Just don't expect the funniest movie of all time and you should be happy with the end product.