Youβd think after sixteen seasons, the gang from Itβs Always Sunny in Philadelphia would run out of new ways to make bad decisions. But noβSeason 16 delivered fresh chaos like it was pouring drinks at Paddyβs Pub during a blackout. As Season 17 premieres on FXX, letβs take a walk down the (morally bankrupt) memory lane of last seasonβs highlights, from celebrity booze con jobs to possibly the weirdest dream sequence Dennis has ever had. And thatβs saying something.
The show, now the longest-running live-action sitcom in U.S. history, took things up a notch by doubling down on meta madness and revisiting past running gags with a wicked sense of self-awareness. If you blinked, you mightβve missed a nod to Season 1 or a twisted callback to Macβs decades-long obsession with Chase Utley. In short, Season 16 was a warped, brilliant love letter to the fansβand a warning shot for whatβs still to come.
So before Itβs Always Sunny in Philadelphia Season 17 drags us back into the pub, hereβs a quick refresher on the schemes, surprises, and surreal moments that made Season 16 one of Sunnyβs most hilariously deranged entries yet.
Old jokes, new twists: Nostalgia gets weaponized in Itβs Always Sunny in Philadelphia

The season was bursting with Easter eggs, but they werenβt just tossed in for a wink and a laughβthey came back sharper, funnier, and more bizarre than ever. Remember the D.E.N.N.I.S. System? Of course you do. But Itβs Always Sunny in Philadelphia Season 16, so they flipped it on its head by revealing a new one: the S.I.N.N.E.D. System, Dennisβ sinister dating manual for manipulating men. Somewhere, a therapist just developed a migraine.
Macβs long-running infatuation with baseball legend Chase Utley also returned with a twist. After more than a decade of buildup, Mac finally meets his idol. But rather than a heartwarming moment, the encounter ends with Utley swiping Macβs lucky monkey paw. Yes, thatβs an actual plot point. And yes, it somehow works. These throwbacks werenβt just fan serviceβthey were expertly repurposed to drive the absurdity further into the stratosphere.
Mental breakdowns, inflatable furniture, and whiskey wars

One of the seasonβs standout episodes, βCelebrity Booze: The Ultimate Cash Grab,β went full meta as the gang tried to launch a brand of alcoholβand roped in Bryan Cranston and Aaron Paul playing hilariously vain versions of themselves. What started as a satire of celebrity liquor brands turned into a masterclass in cringe comedy, complete with monologues and ego meltdowns. The joke hit so hard because it didnβt pull punches, even at its own creators.
Meanwhile, Dennis took center stage in the season finale, where his quest for inner peace quickly spiraled into madness. Diagnosed with high blood pressure, he tried to decompress. Instead, he hallucinated himself battling a tech CEO, ripping out the guyβs heart, turning it into a glowing diamond, and eating it. Yes, seriously. Itβs the kind of thing only Sunny could pull offβpart nightmare, part masterpiece, and somehow... still about emotional repression.
Season 17 picks up the piecesβand possibly sets them on fire
Itβs Always Sunny in Philadelphia Season 16 left plenty of threads hanging in the most gloriously chaotic way. Mac still hasnβt fully processed the whole βDennis catfished me as my fake boyfriendβ reveal. Frank, emotionally bruised and literally shot by everyone, might be facing an existential reckoning. And Dee? She just wants her all-girls bowling team to win without sabotage (good luck with that).
As Season 17 kicks offβbeginning with a crossover continuation with Abbott Elementaryβexpect the show to lean harder into absurdity while still delivering the kind of sharp satire and meta weirdness that made Itβs Always Sunny in Philadelphia Season 16 such a standout. If the past season was a greatest-hits album played on fast-forward and laced with LSD, this one promises to be the concert tour nobody survives emotionally intact.