I love each of these actors, and thought they'd be an interesting ensemble cast if the writing held up. I also did not expect this movie to be about what it was about (no spoilers).
Really, I am not sure why it didn't do well in theaters except maybe it's a bit formulaic and slightly crude. It was worth a $3.99 date-night rental, though, just to laugh together at all the, um, boy-parts-oriented jokes (and oh my, were there ever so many).
Plus, Richard Ayoade! Why not?
Pros: You'll be surprised at what it's really about, great actors; relatively non-repetitive crude jokes
Cons: A bit formulaic, a bit crude (for those sensitive types), and Ayoade doesn't get the screen time or writing he deserves