Most of us laughed at Will Ferrell and John C. Reilly in Talladega Nights and Step Brothers, now we get to do it again as they take on the roles of Holmes and Watson, respectively, in, erm, Holmes & Watson.

Yes, they’re bringing their own brand of madness to Sir Arthur Conan Doyle’s world, and as utterly stupid as it looks, we couldn’t help LOLing a few times during this trailer – and first thing on a Monday morning, no less!

The story, such that it is, involves a threat made by Moriarty, who gives Sherlock and his sidekick four days to solve a mystery or the Queen of England gets it. That’s if she actually survives the sleuthsome twosome, of course.

Written and directed by Etan Cohen (the guy who penned Men in Black 3, Tropic Thunder and co-wrote the best fictional comedy turned actual documentary ever, Idiocracy), Holmes & Watson also stars Rebecca Hall, Rob Brydon, Kelly Macdonald and Ralph Fiennes.

Holmes & Watson get their elementary on in Australian cinemas on Boxing Day, December 26.

Get into Talladega Nights and Step Brothers at JB Hi-Fi.