It's been 15 years since _Step Brothers_ debuted in theaters — and still no sequel. The 2008 comedy, directed by now–Oscar winner Adam McKay (_The Big Short_) and starring Will Ferrell

and John C. Reilly, became a hit at the time for its raunchy, irreverent humor. _Step Brothers_ tells the ridiculous story of two middle-aged man-children: Brennan (Ferrell) lives with his

mom Nancy (Mary Steenburgen) and Dale (Reilly) is still at home with dad Robert (Richard Jenkins). The two butt heads when Nancy and Dale get married, merging the two families under one

roof. Reilly told _IndieWire_ back in 2018 that while _Step Brothers_ is "funny" and "so broad," at the "core of it are these very real family issues, and I think

teased the possibility of a potential sequel — and why it likely won't happen. About a sequel, Reilly told _IndieWire_ in that 2018 interview that they'd "been talking about

it pretty much since the first one came out." But, “for most artists, sequels aren’t the most attractive thing. Fans, of course, are different. If you like pizza, you want more pizza. I

understand people really getting into the idea, but in terms of having something on the table, no, there isn’t." "We had some great ideas over the years. I hope I don’t age out of

the possibility. It might be really sad if we’re like 60 years old and doing it," Reilly, now 58, added at the time. Then, in 2020, Reilly told Conan O'Brien that they "felt

like unless we were really sure that we could do a better version or improve on what it is, let's leave it alone. Sequels are hard to pull off." Ferrell, now 56, teased to the _New

York Daily News_ in 2017 what idea they'd floated for a followup film. "We talked about _Step Brothers_, and then Adam and I got sidetracked with other things. We had a whole

story where John and I follow our parents to live in a retirement community and try to convince them that we earned the right to retire as well," he revealed at the time. Ferrell, who

has returned for sequels like _Anchorman 2: The Legend Continues_ in 2013 and _Zoolander 2_ in 2016, last co-starred with Reilly in 2018's _Holmes & Watson_. A rift between Ferrell

and McKay, 55, may prevent a potential _Step Brothers_ sequel from coming to fruition. In 2019, they announced that they were parting ways on their business endeavors with Gary Sanchez

Productions after 13 years, saying in a statement at the time, "The two of us will always work together creatively and always be friends. And we recognize we are lucky as hell to end

this venture as such." However, _Don't Look Up_ director McKay said in 2021 that their falling out "felt like a breakup" and that things between them "ended not

well." The director claimed the breaking point came when he decided to recast the role of the Los Angeles Lakers' former team owner Jerry Buss for the series _Winning Time_, hiring

Reilly instead of Ferrell for the part. Ferrell told _The Hollywood Reporter_ of their decision to part ways, "Adam was like, 'I want to do this, and this, and this.' He

wanted growth and a sphere of influence, and I was just like, 'I don't know, that sounds like a lot that I have to keep track of.' To me, the potential of seeing a billboard

and being like, 'Oh, we're producing that?' I don't know. … At the end of the day, we just have different amounts of bandwidth." [embedded content] Steenburgen,

though, is still down to reprise her role if a sequel ever happens. While on _The View_ in May, the actress, 70, said she still quotes the movie often. "That movie was so hard to even

get through a day of it, because part of it was improvised and part of it was scripted, so the improvised parts, you had no way of preparing. Like, your belly laugh, or biting your cheeks to

keep from laughing. It was just divinely, hilariously funny every single day." "I wish we would do another, but I'm sure that won't happen," added Steenburgen.

"But I treasured every second of it."