It’s a pretty common story. Single parents meet and form a new family, which doesn’t always please their kids. This is what happens to Robert (Richard Jenkins) and Nancy (Mary Steenburgen), who each have a son living with them when they move in together, the particularity being that said sons are both 40!

Worse, on top of refusing to leave home, Brennan (Will Ferrell) and Dale (John C. Reilly) literally behave as if they were still little boys, spending all day playing and getting into trouble. First foes, then best friends, these overgrown brats grow more and more destructively immature whether they’re at each other’s throat or having a jolly good time together, until their parents can’t stand it anymore and decide to kick them out, forcing them to find jobs and get their shit together at last…

“Step Brothers” is, after “Anchorman” and “Talladega Nights”, the third film to be co-written by Will Ferrell and director Adam McKay and, once again, the two unleash an uproariously funny barrage of vulgarity and absurdity. Fans of their previous collaborations will get a big kick out of this, while others are probably better off giving it a pass, as Ferrell and McKay reach new heights (or lows, depending on how you look at it) in juvenile humor here.

Having already costarred in “Talladega Nights”, Ferrell and John C. Reilly further prove in “Step Brothers” that they’re a perfectly matched comic pairing. Not only do they kinda look alike, both being tall, chubby and curly-haired, they also share a similar shameless willingness to be as goofy as possible, whether it means Reilly being totally clueless about how to make out with a girl, Ferrell singing Andrea Bocelli’s Con te partirò with his angel voice or the two of them getting into numerous silly fights. Speaking of which, I strongly advise you to remain seated during the end credits to witness their ultimate throw-down, which is straight out of a John Woo flick!