The third of a promised six(!) Anna Kendrick movies to hit Seattle Screens in 2016 is an exemplar of the mayfly model of modern American comedy. Based on a true story formerly adapted into a book, it’s about a pair of dim-witted brothers who are tasked with finding acceptable dates to their younger sister’s wedding. An opening montage establishes their vision of the world: slow-motion revelry, drinking, beautiful people, they see themselves as the life of every party. Home videos presented early in the film by their parents cleverly undermine this fantasy conviction. In fact, the two are loud, obnoxious, and clumsy: their antics destroy every gathering and event they attend. Thus their quest: they must find nice, respectable girls to keep them in line at the destination wedding in Hawaii. To this end, naturally enough, they post an ad on Craigslist, become internet famous, and suffer through a series of meet-and-greets with dreadful dames, a Seven Chances for beer-obsessed millennials. This is apparently as far as the book goes, while the film introduces Kendrick and Aubrey Plaza as the boys’ dates. A kind of Romy and Michelle for the Facebook era, Tatiana and Alice, quickly established to be just as dumb and hedonistic as Mike and Dave, pretend to be nice girls in order to get the free vacation. It’s an attempt at short-circuiting the book’s misogyny with a “hey women are gross and terrible too”. The rest of the film consists of episodic gag sequences at the wedding, with unimaginative and indifferently filmed slapstick adding an element of body horror to the vulgar dadaist improv one-liners that have become the dominant idiom of our comedies in the post-Apatow era.