History NightmareFuel / ItsAlwaysSunnyInPhiladelphia

* "A Very Sunny Christmas": Charlie going apeshit and biting the mall Santa in the neck. We don't even know if the guy survived. Only the [[SoundtrackDissonance sunny stock music]] somewhat alleviates what is otherwise a ''very'' dark scene.

* "The Gang Escapes" shows that [[SerialRapist Dennis']] room is not only soundproofed, but has locks on the outside.

* In "The Gang Cracks the Liberty Bell", 1776!Frank accidentally shoots Colonel Cricket '''''with a musket.''''' And we see all the gory details.

* Not shit-your-pants scary, but pretty unsettling. When Dennis and Dee have to decide whether or not to take their grandfather (who they know used to be a Nazi) off life support, they visit his apartment and find some old movie footage of them hanging out with Pop-Pop when they were kids. They look on fondly at the child versions of themselves, in the backseat of his old car, getting hot dogs, and all's well and good while they think this confirms that he came to America and left his Nazi past behind him... until they see themselves being brought to a Hitler Youth camp with Pop-Pop, him telling them they need to take the country back from "these n*ggers and Jews," and gleefully doing the Hitler salute. Did they really just not remember that or did they block it out? Either way, seeing the child version of yourself cheerily yelling "Sieg Heil!" would be disturbing to anyone.

** Dennis' fantasy ends with [[spoiler: him "mercy killing" (smothering with a pillow) Jackie Denardo after an accident ravages her body, but specifically, destroys her breasts]].

** Dennis' fantasy ends with [[spoiler: him murdering Jackie Denardo after an accident destroys her breasts]].

* In "The Gang Goes To Hell", when Dennis is trying to proposition a young girl on the ship. Despite him not seeing it as such, he comes off as EXTREMELY rapey, driving the girl to run away screaming.

** Mac's homophobics and zealous religiousness can become very nightmare fuel when you imagine what he went through as a child. Especially when he openly thinks being whipped in public is a thing that is done that helps him be closer to God. Whatever happened to him as a child is kind of unnerving.

** From the same episode, Mac [[spoiler: kills the ridiculously cute dog that Dennis got for him and feeds its remains to Dennis in their evening meal as a cry for attention, which is somehow made even worse by the fact that he named the dog "Dennis Jr." and promised to raise it "like their own son"]]. The fact that he manages to out-crazy ''[[TheSociopath Dennis]]'' is terrifying enough on its own, and his manic laughter after he reveals what [[spoiler: Dennis has been eating]] is just downright unsettling.

** After TheReveal described above, Dennis gets ready to leave the house, and opens a closet; hundreds of boxes of Kraft Mac and Cheese pour out. Throughout the whole episode, Mac has been making "Mac's Famous Mac and Cheese" for Dennis, claiming it's his own recipe...but the discovery of the boxes proves otherwise. Dennis [[SlasherSmile slowly begins to smile]] and [[VillainousBSOD demands that Mac tell him about the "special" dinner]]; Mac starts desperately begging for forgiveness, and it's only the doorbell ringing that prevents Dennis from attacking him. But that doesn't mean Dennis is calm--instead, he slowly walks over to the fireplace and picks up a poker, ready to ''brutally kill'' whoever is at the door (he suspects it to be Wally, who, as mentioned above, might not even exist). Dennis's previous breakdowns are largely played for laughs--and this one is too--but he does seem as though he's ready to actually commit murder right then and there. That's how absolutely over the edge he's gone.
** The entire final scene between Mac and Dennis also strikes home in that it looks exactly like a bad, abusive marriage, which might trigger painful, scary memories for viewers.

* Psycho Pete's poor, unfortunate teenage years. [[spoiler: He was Charlie and Mac's friend, was sent to an institution because of a rumor that he killed and ate his parents. It turns out that he went away to be treated for depression and social anxiety. The fact that people legitimately thought that about a nice, soft spoken guy, and the fact that the Gang probably partially started the rumor, is horrible and could definitely happen]].

* Psycho Pete, Mac and Charlie's old friend and gang leader, killed and ate his own parents.
** He gets set free due to his institute shutting down in "Psycho Pete Returns" and [[spoiler:it turns out that the parent-eating thing was a rumour, and in reality Pete had been institutionalized for depression and social anxiety. The fact that it may have been partially fueled by the gang spreading rumours about him is Nightmare Fuel in itself, though]].

*** During that same dinner scene, Dennis is so completely broken that he barely speaks, instead staring straight ahead with wide, deadened eyes as he mindlessly shovels the food into his mouth. That, coupled with Mac's histrionics, sets a deeply disturbing tone for the last minutes of the episode.

* Charlie tells Mac that he shouldn't get all worked up about his parents stealing other people's gifts, posing it as a holiday tradition. Then he says to Mac that he handled the news about his mom whoring herself out to a bunch of "{{Santa|Claus}}s" on Xmas day quite well and then procedes to bite the MallSanta's neck, asking him if he fucked his mom. Despite being a funny scene; it's still kind of scary (and sad) to see a guy biting a mall Santa's neck so hard that he bleeds and repeatedly yelling "Did you fuck my mom?" and "Did you fuck her?" without any evidence to support that he ever did, especially since the acting is very believable. Poor, unfortunate mall Santa.

** After TheReveal described above, Dennis gets ready to leave the house, and opens a closet; hundreds of boxes of Kraft Mac and Cheese pour out. Throughout the whole episode, Mac has been making "Mac's Famous Mac and Cheese" for Dennis, claiming it's his own recipe...but the discovery of the boxes proves otherwise. Dennis [[SlasherSmile breaks into an insane grin]] and [[VillainousBSOD demands that Mac tell him about the "special" dinner]]; Mac starts desperately begging for forgiveness, and it's only the doorbell ringing that prevents Dennis from attacking him. But that doesn't mean Dennis is calm--instead, he slowly walks over to the fireplace and picks up a poker, ready to ''brutally kill'' whoever is at the door (he suspects it to be Wally, who, as mentioned above, might not even exist). Dennis's previous breakdowns are largely played for laughs--and this one is too--but he does seem as though he's ready to actually commit murder right then and there. That's how absolutely over the edge he's gone.

** In part 2, the Gang going through the DespairEventHorizon when they believe the ship is sinking. What is especially startling is when Charlie suddenly claims they are already dead and the brig is some sort of purgatory and tries to prove it by [[spoiler: ''casually shooting himself in the head with a flair gun'']], thankfully he quickly comes to.

* In "The Gang Cracks the Liberty Bell", 1776!Frank accidentally shoots General Cricket '''''with a musket.''''' And we see all the gory details.

* The dreams Mac has about his dad in "[=PTSDee=]."

* In "Mac is a Serial Killer", Charlie finds ''severed heads'' in a fridge.

** Just ask the therapist from "The Gang Gets Analyzed", who witnesses Charlie's [[AndIllCallHimGeorge dead pigeon]] and Dennis' [[SerialKiller "executioner's switch"]] monologue, just to name a few.

* The dreams Mac has about his dad in "PTSDee."

* Dennis and Dee's vacation to the Jersey Shore gets really dark really fast when they tag along with a gang of criminals led by a dangerous, trigger-happy dusthead who gets one of his partners shot in a botched robbery, murders a doctor right in front of them, and is in the middle of making them dig their own graves when they finally make a break for it. [[SoundtrackDissonance All of this is scored by The Go-Go's "Vacation"]].

** After Mac leaves Charlie alone with said "leprechaun", things take a turn for the '''Film/PulpFiction'''.

* If you examine the group in the POV of an outsider who interacts with them then the group as a whole can be considered Nightmare Fuel Incarnate.

* In "The Gang Goes To Hell", when Dee actually understands Dennis's rapey implications and admits to threatening guys who don't sleep with her by saying she will file a false rape report if they don't do anything with her.