When Step Brothers director Adam McKay tweeted earlier this week that Will Ferrell and John C. Reilly would reprise their characters on a forthcoming rap album, it was reasonable to assume that it was some kind of weird joke. But as it turns out, it's a weird joke that's actually happening.

McKay has since confirmed the project, tweeting, "I wasn't kidding about Step Brothers rap album. And we just found out we have a crazy big time producer." No further details have surfaced.

Photos: Hip Hop Royalty

In Step Brothers, a deeply strange and generally underrated comedy from 2008, Ferrell and Reilly play grown men who clash when their parents get married. After the two bond, they form a rap duo known as Huff N' Doback.

Peter Travers Video Review: The X-Files, Step Brothers

If you are unfamiliar with Ferrell and Reilly's rap style, here is a clip of the two performing their absurd song "Boats N' Hoes" in Step Brothers.

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