Dave (Jason Bateman) is a corporate lawyer working his way up to partnership and a devoted family man. Mitch (Ryan Reynolds) is a womanising stoner who appears in soft core movies and is distant from his father who is re-marrying.

Both envy each other's lifestyles and after peeing in a fountain they body swap.

Now Mitch inside Dave's body finds that being a corporate lawyer working on a big merger is no fun while also doing chores for the kids and keeping a wife happy after she has had a Thai meal which gives her the runs.

Dave now living Mitch's life finds out that making soft core films is no fun nor is trying to have sex with an extremely pregnant woman.

The film has a lot of gross out humour and nudity. A baby crapping on Bateman's face for example. It mixes the body swap premise popular in the 1980s with the crude humour from The Hangover type of films.

However despite Reynolds and Bateman having a nice chemistry the film is formulaic despite the rudeness and not really funny.