The title might sound risque but the end product is as safe, cosy and unoriginal as a Now That's What I Call Music Christmas gift.

It's a pleasant watch, partly because the characters are pleasant. And the fact that they can be alternately wise, foolish, earnest, or full of shit depending on the situation just makes them feel more real.

It takes a lot of effort to take a film which stars Rose Byrne and still make it mediocre, but, by God, director Jesse Peretz is up to the challenge.