Premise: Step Brothers is a 2008 American comedy film directed by Adam McKay , written by Will Ferrell and McKay from a story by Ferrell , McKay , and John C. Reilly and starring Ferrell and Reilly . Will Ferrell . He first established himself in the mid-1990s as a cast member on the NBC sketch comedy show Saturday Night Live , and has subsequently starred in comedy films such as Anchorman : The Legend of Ron Burgundy ( 2004 ) , Talladega Nights ( 2006 ) , Step Brothers ( 2008 ) , The Other Guys ( 2010 ) and Anchorman 2 : The Legend Continues ( 2013 ) , all but one of which he co-wrote with his comedy partner Adam McKay . Ferrell is considered a member of the `` Frat Pack '' , a generation of leading Hollywood comic actors who emerged in the late 1990s and the 2000s , including Jack Black , Ben Stiller , Steve Carell , Vince Vaughn , and brothers Owen and Luke Wilson .
Hypothesis: Will Ferrell wrote Step Brothers only with Chimamanda Ngozie Adichie.
Label: CONTRADICTION