The gang from It’s Always Sunny in Philadelphia takes over The Office’s Dunder Mifflin - for some reason - in a new season 14 set video. After 13 seasons on the air, with season 14 set to debut Sept. 25 on FXX, the plucky It’s Always Sunny has undoubtedly secured its place alongside The Office as one of the all-time classic TV sitcoms.

Set in the Philly dive-bar Paddy’s Pub, It’s Always Sunny concerns the on-going wild - and at times pointedly topical - exploits of Charlie (Charlie Day), Mac (Rob McElhenney), Dennis (Glenn Howerton), Dee (Kaitlin Olson) and Frank (Danny DeVito), a group of ultra competitive and unabashedly crass “friends” referred to as “The Gang.” Characterized by an edgy brand of humor that often crosses over into the majestically bizarre, the show gained a devoted following soon after its debut on FX in 2005. Though it’s been largely ignored by mainstream awards shows, having garnered three Emmy nominations for stunt coordination in 13 seasons but none for writing or acting, It’s Always Sunny still manages to top many lists of the best sitcoms around, and when it returns for season 14 it will tie The Adventures of Ozzie and Harriet for the record for longest running sitcom in history in number of seasons.

Related: What To Expect From It's Always Sunny In Philadelphia Season 14

As It’s Always Sunny gears up for that record-tying season 14, star Rob McElhenney shared a unique set video that features himself and fellow cast members DeVito and Day taking over the building that used to house the offices of Dunder Mifflin, the fictional company featured on NBC’s own beloved sitcom The Office. See the clip below:

In the clip, McElhenney shows true It’s Always Sunny spirit by viciously taunting Steve Carell and The Office for no longer being on the air (The Office of course went off the air in 2013, but has received a vigorous second life thanks to Netflix). Why exactly McElhenney, a pantsless DeVito and Day are at that particular location is not elaborated upon in the video, but such random insanity is indeed par for the course for the gang from It’s Always Sunny.

Of course, It’s Always Sunny is not the same show it was when it debuted back in 2005. And season 13 was an even bigger departure for the series as co-creator and cast regular Glenn Howerton was no longer involved in the writing process and only appeared in six of 10 episodes. Given the various cast members’ commitments to other projects, leading to long hiatuses in between seasons, it’s arguably a miracle that It’s Always Sunny in Philadelphia has managed to remain consistently funny for 13 seasons, not that the Emmys have ever bothered to notice.

More: Why The Office Is Netflix's Most Popular TV Show

Source: Rob McElhenney