From Tom Hanks in Big to Jennifer Garner in 13 Going on 30, the old trading bodies gag has a long and checkered history in Hollywood.
But The Change-Up introduces a couple of new twists: This bod-swap tale involves two adult men, and the David Dobkin-directed comedy adds plenty of over-the-top gross out humour for kicks.
For the first two-thirds of the film it mostly works, as Jason Bateman's family man Dave swaps bodies with his pal Mitch (Ryan Reynolds) after a drunken night out, and the pair set about making the most of their strange new worlds.
The bad taste jokes might not be to everyone's tastes - at one point Mitch asks if one of Dave's kids is "a little bit downsey" - and the film's final act predictably descends into rom-com cliches.
But Olivia Wilde and Leslie Mann provide plenty of eye candy, and there are more than enough laughs here to please anyone who enjoyed Knocked Up or Bridesmaids.
