Step Brothers is a comedy film starring Will Ferrell and John C. Reilly as two middle-aged men who become stepbrothers when their single parents get married. The movie hilariously explores their immature and dysfunctional behavior as they clash and eventually form an unlikely bond. With its absurd humor, quotable lines, and the comedic chemistry between Ferrell and Reilly, Step Brothers is a comedy that delivers non-stop laughs.