I just don't get it. Comedy sequels are always just a rehash of jokes, or in the rare case of this film going in a different direction, which apparently doesn't work.
I can't come up with one comedy (and by that I mean a successful one like The Nutty Professor, Arthur, or Rush Hour) sequel that was as good or close to as good as it's predecessor. Not even one. Maybe you guys might be able to come up with a few, but every time I watch even a bit of a comedy sequel it's cringe-worthy.
Humor is about surprising the senses. When you make a comedy you're coming up with something fresh, and with good writing and funny actors it will work. But in a sequel you're not catching anybody off guard, so the chances of catching lightning in a bottle again are really slim.
And the people who make these movies are aware of this. There is some professional pride involved, but the actors and everybody else know that they're by and large going through the motions and the main purpose of the film is a "cash grab", so everyone pretty much just mails it in. Unfortunately this works on movie audiences every damn time, which is why we get Hangover II and Hangover III, Meet The Fockers and Little Fockers, and why we'll probably get 22 Jump Street and 23 Jump Street.
Sorry to sound snobby, but unlike action/adventure, sequels just don't ever work in comedy, yet we keep blowing our money on them and encouraging more of this kind of film making.