The Change Up

The ChangeUp is a 2011 American comedy film produced and directed by David Dobkin, written by Jon Lucas and Scott Moore, and starring Ryan Reynolds and Jason Bateman. The film was released on August 5, 2011, in North America, by Universal Pictures, and received mostly negative reviews, with commentators criticizing the overly crude humor and generic plot, but praising the cast and particularly Batemans againsttype performance.

The next morning, Mitch and Dave realize they have switched bodies. Mitch remembers the wish they made the night before and they drive back to the park, planning to urinate again in the fountain and wish for their original lives back, but find the fountain has been removed for restorations. Forced to wait a few days until the parks department can locate the fountain, Mitch and Dave agree to pretend to be each other for the day. When Mitch arrives at Daves law firm office, he befriends Daves attractive assistant, Sabrina McArdle Olivia Wilde. However, Mitchs lack of professionalism and legal knowledge cause a big merger to fall through. Meanwhile, Dave arrives at Mitchs film shoot to discover that it is a porno.Tired of pretending to be Mitch, Dave has them go back to his house to tell his wife Jamie Leslie Mann the truth, but Jamie does not believe him. Dave gives Mitch advice on how to behave professionally and Mitch sets Dave up on a date with Sabrina, who Dave has had a crush on. ........

Source: Wikipedia