Body swap comedies get the R-rated treatment on September 16th when The Change-Up hits cinemas, and to help promote it a brand new red band trailer has arrived, with plenty of swearing and sex talk to get us in the mood for the flick. Ryan Reynolds plays a single slacker who’s been best friend with Jason Bateman’s upright family man since they were kids. However after they somehow swap bodies (which seems to involve pissing in a fountain for some reason), all hell breaks loose. The script by Hangover writers Jon Lucas & Scott Moore promises to delve into areas that previous bdy swap comedies have feared to tread – after all, if you swap bodies with you married best friend, are you now allowed to have sex with his wife?