History Trivia / Itsalwayssunnyinphiladelphia

* WordOfGay: [According to Glenn Howerton https://www.youtube.com/watch?v=bzHPifzNh4Y] talking on a Comic-Con panel, all of the main characters are "vaguely bisexual": "I don't even know if it's 'vaguely.'"

* DyeingForYourArt: Rob [=McElhenney=] didn't like how sitcom actors always start looking better as the seasons go by because the stars are more successful and have more money, so he gained ''50 pounds'' and spent Season 7 as "Fat Mac". In Season 13, he did the opposite and put himself in a hardcore six-month workout regimen to become chiseled.

* GodNeverSaidThat: Since "The High School Reunion" two-parter, the theory that the Waitress' real name is Nikki Potnick based on what appeared to be a hidden BrickJoke (Frank steals a name tag with the name to break into the reunion early on into the episode and later the Waitress remarks that she wasn't able to find a name tag with her name on it when she arrived at the reunion) became incredibly popular. Since then, the cast have stated multiple times that the Waitress' is ''not'' Nikki Potnick and that the two seemingly connected gags were unrelated (Nikki Potnick was actually an obscure CallBack to an earlier mentioned classmate of the Gang while the Waitress not getting a name tag was a riff on her status as a ForgettableCharacter) but the misconception continues to often be purported as fact.

* UnderageCasting: Joe Polito, who plays Frank's older brother, is actually younger than Danny DeVito.

* NamesTheSame:
** No, Sun Li is not that [[VideoGame/JadeEmpire Glorious Strategist]].
** Similarly, the name of main character Frank Reynolds is shared with, among others, a late former [[Creator/{{ABC}} ABC World News Tonight]] [[UsefulNotes/WashingtonDC Washington-based]] [[https://en.wikipedia.org/wiki/Frank_Reynolds anchor]].

* DawsonCasting: PlayedForLaughs in "The Gang Buys a Roller Rink", where the main cast play their characters in a flashback to when they were in their early 20s (and, in Danny [=DeVito's=] case, his mid-fifties). No attempt is made to make them look younger apart from changing their hair and wardrobe, though this, of course, just adds to the joke.

** Creator/DaveBautista auditioned for the role of Luther Mc[=Donald=] (which would have been a case of PlayingGertrude if he had gotten the part, since Bautista is only eight years older than Rob Mc[=Elhenney=]).

** Writer Megan Ganz has spoken on the podcast about how Creator/KaitlinOlson was one of her comedy heroes and a major reason she wanted to work on ''Sunny''.

** Dee's pregnancy was written in because Kaitlin Olson was pregnant. The show did hide her bump before it was revealed she was pregnant. They actually pulled it off, though; watch "Mac and Charlie: White Trash" for some subtle hiding.

* [[https://www.indiewire.com/2022/08/always-sunny-pranked-danny-devito-with-fake-episode-1234755942/ Rob, Charlie, and Glenn once pulled an April Fool's Day prank on Danny [=DeVito=]]] by sending him a fake script that involved Frank getting busted soliciting a prostitute and going to jail. While in jail, Frank is then raped by various inmates and even the prison guards, which horrified the usually game [=DeVito=], who came within a hair's breadth of calling his lawyer to see if he could get out of having to perform these scenes. [=DeVito=] made it to the end of the script, where one of the guys who was sodomizing Frank threw him to the floor and whispered in his ear, "April fools, bitch", revealing the whole thing was an elaborate prank. Charlie Day also told this story on ''Conan''.

* ApprovalOfGod: While the creators debunked the popular theory that the mail addressed to "Pepe Silvia" that Charlie keeps getting in "Sweet Dee Has a Heart Attack" are actually addressed to "Pennsylvania" and are getting misread due to his illiteracy, Glenn Howerton admitted that he liked the idea a lot.

** Carter MacIntyre played one of the male models competing in "America's Next Top Paddy's Billboard Model Contest" before reappearing nearly a decade later as the male stripper Dee ruins the life of in "PTSDee". Similar to the above example, [[WordOfGod Glenn Howerton has it as his personal headcanon that the two are the same character]].

* [[https://www.indiewire.com/2022/08/always-sunny-pranked-danny-devito-with-fake-episode-1234755942/ Rob, Charlie, and Glenn once pulled an April Fool's Day prank on Danny [=DeVito=]]] by sending him a fake script that involved Frank getting busted soliciting a prostitute and going to jail. While in jail, Frank is then raped by various inmates and even the prison guards, which horrified the usually game [=DeVito=], who came within a hair's breadth of calling his lawyer to see if he could get out of having to perform these scenes. [=DeVito=] made it to the end of the script, where one of the guys who was sodomizing Frank throws him to the floor and whispers in his ear, "April fools, bitch", revealing the whole thing was an elaborate prank. Charlie Day also told this story on ''Conan''.

* [[https://www.indiewire.com/2022/08/always-sunny-pranked-danny-devito-with-fake-episode-1234755942/ Rob, Charlie, and Glenn once pulled an April Fool's Day prank on Danny [=DeVito=]]] by sending him a fake script that involved Frank getting busted soliciting a prostitute and going to jail. While in jail, Frank is then raped by various inmates and even the prison guards, which horrified the usually game [=DeVito=], who came within a hair's breadth of calling his lawyer to see if he could get out of having to perform these scenes. The guys responded by instructing Danny to finish the script, which ended with of the prisoners who was sodomizing Frank whispering in his ear, "April fools, bitch", revealing the whole thing was an elaborate prank. Charlie Day also told this story on ''Conan''.

* [[https://www.indiewire.com/2022/08/always-sunny-pranked-danny-devito-with-fake-episode-1234755942/ Rob, Charlie, and Glenn once pulled an April Fool's Day prank on Danny [=DeVito=]]] by sending him a fake script that involved Frank getting busted soliciting a prostitute and going to jail. While in jail, Frank is then raped by various inmates and even the prison guards, which horrified the usually game [=DeVito=], who promptly called his lawyer to see if he could contractually get out of having to perform these scenes. The guys responded by instructing Danny to finish the script, which ended with of the prisoners who was sodomizing Frank whispering in his ear, "April fools, bitch", revealing the whole thing was a prank. Charlie Day also told this story on ''Conan''.

* MagnumOpusDissonance: While 'Magnum Opus' might be overstating it, Glenn Howerton has stated that the cast love the episodes "The Gang Cracks the Liberty Bell" and "Frank's Brother", which are among the most divisive episodes in the series.

* Roddy Piper (who played Da Maniac) once heckled Danny [=DeVito=] during a guest interview that Danny was doing for WWE during "The War to Settle the Score" broadcast on MTV, which you can see [[here https://www.youtube.com/watch?v=tEKw6tRnnhE]].

* Roddy Piper (who played Da Maniac) once heckled Danny [=DeVito=] during a guest interview that Danny was doing for WWE during "The War to Settle the Score" broadcast on MTV, which you can see here: https://www.youtube.com/watch?v=tEKw6tRnnhE

* [[https://www.indiewire.com/2022/08/always-sunny-pranked-danny-devito-with-fake-episode-1234755942/ Rob, Charlie, and Glenn once pulled an April Fool's Day prank on Danny [=DeVito=]]] by sending him a fake script that involved Frank getting busted soliciting a prostitute and going to jail. While in jail he gets raped by various inmates and even the prison guards, which horrified the usually game [=DeVito=], who promptly called his lawyer to see if he could contractually get out of having to perform these scenes. The guys responded by instructing Danny to finish the script, which ended with of the prisoners who was sodomizing Frank whispering in his ear, "April fools, bitch", revealing the whole thing was a prank. Charlie Day also told this story on ''Conan''.

* GodNeverSaidThat: Since "The High School Reunion" two-parter, the theory that the Waitress' real name is Nikki Potnick based on what appeared to be a hidden BrickJoke (Frank steals a name tag with the name to break into the reunion early on into the episode and later the Waitress remarks that she wasn't able to find a name tag with her name on it when she arrived at the reunion) became incredibly popular. Since then, the cast have stated multiple times that the Waitress' is ''not'' Nikki Potnick and that the two seemingly connected gags were unrelated (Nikki Potnick was actually an obscure CallBack to an earlier mentioned classmate of the Gang while the Waitress not getting a name tag was a riff on her status as a ForgettableChracter) but the misconception continues to often be purported as fact.

* MeanCharacterNiceActor: All of the main actors are the complete opposites of the scumbags that they portray on the show, and all five have made it explicit that they are not their characters and that the show is meant to parody the bad behaviours of the Gang, not glorify them.

* MissingEpisode: "Dee Day" is the only episode in the series to not be on Hulu or on DVD. The only way to watch it legally is via purchase on Google.