History Fridge / ItsAlwaysSunnyInPhiladelphia

* When Dennis gets a job at the Oldies Rock Cafe in "The Gang Sells Out", The Waitress admonishes him for breaking the rules, even though she could be manipulated into ignoring breaches of conduct if Dennis was involved. When she confronts him, it's while he's doing shots with a bunch of college girls. The Waitress was jealous and lashed out because of it, forgetting that she should turn a blind eye so Dennis won't think less of her.

* The idea of "The Nightman" also involves "The Dayman" (Charlie). The actor who plays Charlie has the surname "Day," which may have had a part in naming the "Dayman" character.

* It's increasingly demonstrated that Mac is ArmouredClosetGay, so in season eight you might wonder why he immediately checks out in "Frank's Back in Business" when he and Dennis mistake a caddie for a male prostitute. However, Mac is always obsessed with huge, muscular bodybuilders. Since the caddie is a young, slender boy, he's not Mac's type.

* When Charlie first plays his song "Nightman" in "Sweet Dee is Dating a Retarded Person," everyone points out that the second half of the song sounds like a description of a man breaking into Charlie's room and raping him while he's asleep. A season 1 episode had already implied that Charlie had an uncle who may or may not have molested him, and the implications get worse every time the uncle appears.

* It's always sunny because Dayman defeated the Nightman

* So [[spoiler: Dee's neighbor Gary was the serial killer]]. That explains [[spoiler: how he knew the shears would cut though bone]]. The gang insists that she doesn't fit the profile, but he's clearly attracted to her. Was he just biding his time? Did she really not fit the profile well enough to murder? Did he kill all those other people ''because'' Dee was taking advantage of him?

* When Charlie first plays his song "Nightman" on "Sweet Dee is Dating a Retarded Person," everyone points out that the second half of the song sounds like a description of a man breaking into Charlie's room and raping him while he's asleep. A season 1 episode had already implied that Charlie had an uncle who may or may not have molested him (though it's strongly implied that he may have), and the implications get worse every time the uncle appears.

* Frank's gradual {{flanderization}} over time, including his degrading physical state, are to be expected within the world of the show. In his first appearance, when he's introduced as an upper-class businessman, he makes a conscious decision to embrace the gang's grimy, depraved lifestyle because his wife divorced him and he's been depressed to the point of suicide about losing most of his money. He was pushed into his upperclass lifestyle by his wife, but after his divorce he decides that he's more comfortable and a debauched drunk. He gets worse and worse in each season as he goes deeper and deeper into the gang's world.

* So...[[spoiler: Dee's neighbor Gary was the serial killer]]. That explains [[spoiler: how he knew the shears would cut though bone]]. The gang insists that she doesn't fit the profile, but he's clearly attracted to her. Was he just biding his time? Did she really not fit the profile well enough to murder? Did he kill all those other people ''because'' Dee was taking advantage of him?
* In the Season 6 premiere, Dennis says that Mac owns literally nothing in the apartment. Seems impossible, but then you remember that when Mac had faked his death in Season 4, Dennis went through the apartment and threw away everything of Mac's ("Goodbye Mac's shit, goodbye Mac's shit...").

* So...[[spoiler: Dee's neighbor Gary was the serial killer]]. That explains [[spoiler: how he knew the spears would cut though bone]]. The gang insists that she doesn't fit the profile, but he's clearly attracted to her. Was he just biding his time? Did she really not fit the profile well enough to murder? Did he kill all those other people ''because'' Dee was taking advantage of him?

* At first it seems odd that the Gang (save for Mac), who are usually un-P.C. and all-around {{jerkass}}es, are fine with gay marriage. But, on closer examination, past episodes have more than proven that the Gang's political stances are entirely self-serving, and probably only approve of gay marriage because it has nothing to do with them and therefore doesn't impact them negatively.

* The title is ''It's Always Sunny in Philadelphia'' but the opening credits shows Philadelphia's sights at night. Right from the start, you understand the irony of the title.

* Frank's gradual {{flanderization}} over time, including his degrading physical state, are to be expected within the world of the show. In his first appearance, when he's introduced as an upper-class businessman, he makes a conscious decision to embrace the gang's grimy, depraved lifestyle. He was pushed into his upperclass lifestyle by his wife, but after his divorce he decides that he's more comfortable and a debauched drunk. He gets worse and worse in each season as he goes deeper and deeper into the gang's world.

* Frank's gradual [[{{Flanderization}} flanderization]] over time, including his degrading physical state, are to be expected within the world of the show. In his first appearance, when he's introduced as an upper-class businessman, he makes a conscious decision to embrace the gang's grimy, depraved lifestyle. He was pushed into his upperclass lifestyle by his wife, but after his divorce he decides that he's more comfortable and a debauched drunk. He gets worse and worse in each season as he goes deeper and deeper into the gang's world.

* Frank's gradual [[{{Flanderization}} flanderization]] over time, including his degrading physical state, are to be expected within the world of the show. In his first appearance, when he's introduced as an upper-class businessman, he makes a conscious decision to embrace the gang's grimy, depraved lifestyle. He gets worse and worse in each season as he becomes more and more entrenched in their world.
** Frank's flanderization is intentional *in universe*: as of the Gang Gives Frank an Intervention, Frank has made a conscious decision to be come what he has. It's implied that he was successful as a sleazy businessman and was pushed into the upper-class lifestyle by his gold-digging wife. After his divorce, he realizes he's more comfortable as a barely functional, debauched drunk.

* Frank's flanderization is intentional *in universe*: as of the Gang Gives Frank an Intervention, Frank has made a conscious decision to be come what he has.

* Frank's gradual [[{{Flanderization}} flanderization]] over time, including his degrading physical state, are to be expected within the world of the show. In his first appearance, when he's introduced as an upper-class businessman, he makes a conscious decision to embrace the gang's grimy, depraved lifestyle. He gets worse and worse in each season as he becomes more and more entrenched in their world.

* Real-life Philadelphia can get very cold, but the daytime weather in the show is, true to the title, always sunny and warm. The only exception is the Christmas episode, which unavoidably must take place in winter.

* Many things about "The Nightman Cometh", Charlie's play from the eponymous episode, may have a deeper meaning if you think about it. [[spoiler: Aside from the obvious "Princess who works at the coffee shop", representing the waitress, Charlie is stated to be "That baby boy". So the musical number in the beginning implies some sort of connection charlie may have had with a waitress as a young child. The "Make love to you part" may have implied [[FridgeHorror some form of sexual abuse]], and Charlie grew a trust as a result of misunderstanding. The troll could represent the real life things separating Charlie from the waitress, and the Nightman could represent the psychological factors, so the Nightman paying the troll toll could represent Charlie's "friends" allowing him to give into his demons. In the play, the Dayman defeats them both and the princess and him fall in love with each other, a long time wish of Charlie. Finally, and somewhat tragicly, the play is meant to be a drama, [[{{Narm}} but people keep laughing at it]], which could represent hoe Charlie tries to become the kind of person he wants to, but no one takes him seriously. Not even the play himself, which is borderline TearJerker]]. Probably some FanWank on my part, but I still enjoy the interpretation.
** What's even worse is the idea that paying for the boy wasn't metaphorical at all...His mom wasn't above it, after all.
** It's much more depressing when you realize that Charlie wrote the musical with the intention of having the waitress fall in love with him. The musical is hysterical, but to Charlie the whole thing was [[SeriousBusiness completely serious]]. In Charlie's mind, the musical was a way for the waitress to understand him and to be impressed by the things he's overcome.

** Then later in the series it's outright stated he was molested by a Gym teacher, which gives the Nightman Cometh even more signifigance, and among [[AbusiveParents other things,]] does a good job explaining why Charlie is as anxious and erratic as he is.
** That is... just not right. "Charlie Got Molested" was a season 1 episode (therefore WAY before the song "Nightman") and the whole point of the episode was that he wasn't molested. Agreed with Uncle Jack, though.
** Incidentally, Uncle Jack was introduced in that same episode... but yeah, that second post is just comically incorrect.

** Actual Philadelphian here. That is a complete lie.
*** What's a complete lie? That Philadelphia gets cold, or that Christmas takes place in winter?

* Frank was [[{{Flanderization}} flanderized]] into a, classless, amoral lunatic from a normal middle aged man (albeit one who was depressed about his life and was considering suicide due to his wife divorcing him). Since his introduction into the show, he has living in an ''extremely'' low quality studio apartment with Charlie, and part owner of a bar, filled with alcohol, and this is him coming from a ''very'' high class house and life. It would be more disturbing for him ''not'' to, as the cast themselves put it, "de-evolve".
** Early on in his appearance he decides to become a nihilist. A lot of his actions come from that.
* In "Sweet Dee has a Heart Attack" Charlie insists that he's got boxes of mail addressed to Pepe Sylvia and Carol in HR, neither of which actually exist. He seems to be going insane, but we know that Charlie is nearly illiterate. Pepe Sylvia = Pennsylvania and Carol in HR = Care of HR.
** That's brilliant, but Mac does say "All those people exist and are upstairs wondering where their mail is." So I'm not sure how much water that holds. still, very good catch.
* So...[[spoiler: Dee's neighbor Gary was the serial killer]]. That explains [[spoiler: how he knew the spears would cut though bone]].
** Also explains why he likes Dee, despite their bickering throughout the episode that she does/doesn't fit the profile.
*** That also qualifies as FridgeHorror.
*** The question here is whether he likes her because she fits the profile, or if the profile fits her because he likes her. IE did he like Dee because she was a young attractive blonde, or did he go after young attractive blondes because they reminded him of Dee?

* In the Season 6 premiere, Dennis remarks to Mac that he (Mac) owns literally nothing in the apartment. Seems impossible, but then you remember that when Mac had faked his death in Season 4, Dennis went through the apartment and threw away everything of Mac's ("Goodbye Mac's shit, goodbye Mac's shit...").
* In the Season 7 Finale, High School Reunion, The Waitress appears drunk complaining about no one remembering her, even mentioning that they didn't even bother to create her a nametag. [[spoiler: Earlier in the same episode, Frank had stolen a random nametag belonging to "Nikki Potnick.]]