Comedy is subjective, so there are bound to be haters for We're the Millers. But, speaking as someone who enjoys vulgar humor that is both mean and smart, I can tell you that I laughed a lot during this brisk, consistently funny movie.
I heartily endorse the original Hangover. Now we've got Part III. And yes, I recognize that the Roman numeral is meant as a joke -- but I have to point out that it's about as funny as many of the gags in this uneven and busy film.