The comedy sees them play Dave and Mitch. One's a frustrated married man with children and the other a carefree single ladies' man. Secretly they want each other's lives and so they swap bodies after sharing a special moment peeing together in a fountain.
Here Bateman talks exclusively about working with kids, the funniest scene in the film and how he used to be 'that guy' in his twenties.
The Change-Up is out on DVD 23 January.
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