The funny bits were in the trailer
A formula done a million times (people magically switch bodies) is presented here in an adult sense, but the result is just as tired as before. A baby poops in Jason Bateman's mouth two minutes in and that pretty much sets the tone for this movie. It is nice seeing Bateman in a role he's not usually in (a playboy screw-up). Predictable, a little bland, and not that funny, The Change-Up is a movie you can skip.