Please don't list this on a work's page as a trope. Examples can go on the work's YMMV tab.
Nightmare Fuel: The Haunting Hour
The entirety of "Catching Cold": The young boy that mail man was talking about? He was the creepy old fat guy. He was trapped in the truck for over thirty years, waiting for someone as obsessed with ice cream as he was to take his place since the ice-cream truck "needs a soul" in order to survive. Imagine putting up with that demented ice-cream jingle for over thirty years.
In Alien Candy, the main character has one of his pinky toes bitten off and the ending is a rather nightmarish I Ate WHAT?
In "Afraid of Clowns", the dream scene where the clown cuts off his hand, even though it was a dream and the hand looked like a cake when it was cut into.
And the end, in which the boy's family reveals that they're clowns and the whole circus act is his rite of passage into becoming a man. Usually in stories like "Vampire Breath," the kid accepts the fact and likes that he'll be a vampire when he hits puberty, but in this story, the boy is cuolrophobic and absolutely hates the idea of becoming what he fears most.
How about "Scary Mary"? Mary in the mirror, the masks, The Faceless Girls and Scary Mary's face were all terrifying. There's also something very disturbing about being so obsessed with beauty that you're oblivious to burning to death.
"Sick": The idea of a little boy trapped with an unseen Eldritch Abomination, and the government being willing to sacrifice him and gas his whole house just to kill it. And the final scene where the boy wakes up and thinks it was All Just a Dream... Until the morning-news show hosts come back suddenly on TV (again) and tell him that—nope, this is not a dream and the government really is gonna blow up his house and everyone in it. The last thing the boy sees and hears before getting killed is a bright white light and a flat line.
"Scarecrow" has the most messed up ending ever, in which a scarecrow — who turns out to be the man who sold the scarecrow to Jenny and her brother — rids the world of everyone and everything in the world, except for Jenny's brother. The scarecrow man tells Jenny's brother that he was spared so that way he can join him in watching the world come to an end. In the original ending, the brother sets fire to the scarecrow and walks away. In an alternate ending, the brother is turned into a scarecrow.
"The Perfect Brother" Matt and Josh are brothers, very nice brothers — but Matt seems too perfect and their parents are always complaining about their grades. Josh sees Matt's legs 'taken away' by the facility as he's a non-functioning robot. He escapes from the robot facility and the staff take a protesting Josh home to his own parents. It soon turns out that Josh is the only human in their family and that his friend was fake. It isn't long before Josh's robotic parents declare him defective and 'just an experiment' as they toss him in a crate (presumably headed to the same facility).
"The Cast": Take your pick: A revelation that the Cat-Lady cursed Lex into making his cast into a rats' nest for her pet cats, Lex later sawing his own cast off- and, his arm, according to paramedics- just to get the cast off, the rats afterwards appearing in the ambulance, or the fact that, even though Lex confessed that he was the one who threw eggs at the cat lady's house, he'll be haunted by those rats.
"Red Eye": A little girl named Georgia has been getting pictures from her father who's doing work abroad. Eventually, a shadowy, demonic figure called an Alp begins appearing in the background of each photo, steadily getting closer (and closer) to her father. As Georgia gets more and more scared, and her mother refuses to listen to her concerns, she's worried that the monster followed her father home. The truth, revealed in the last second of the episode is far worse.
What's worse, that's final scene of this episode. The screen blacks out as we hear Georgia's screams.
The Bigger Bad in Girl in the Painting; it's a dragon — or some kind of reptilian creature — that basically holds the girl and her mother hostage, and they have to lure people from the real world in so they can feed the beast and not end up as dinner themselves.
"Checking Out": A family on vacation stop by this really fancy hotel run by a cult that brainwashes parents into forgetting that they have children and sacrifice the children by tossing them into a room with a white void in it hidden behind a large painting of the hotel's founder. The story itself is a more twisted version of the first episode of The Nightmare Room episode "Don't Forget Me." The good news is: the family came out alive and defeated the cult. The bad news: all of the kids who have been sacrificed in years' past pretty much died with the hotel.
The Director's Cut of Spaceman. Whereas Aaron was sympathetic to the woman trying to cling to the memories of her deceased, space-loving son in the original version, the Director's Cut had him realize that the woman was insane, but before he can do anything about it, she locks him in with her son's corpse and Aaron is forced to play "Spaceman" with the dead boy forever.
"Terrible Love" starts out as more of a supernatural romantic comedy about a girl named Maggie who meets Cupid after getting knocked out during a chemistry class explosion and asks him to help her make a popular boy in science class fall for her and only her, but it does get dark when Brendon gets another hit from one of Cupid's love arrows (which Cupid tries to warn Maggie against), especially when he gives Maggie a tarantula that bites her on the neck or when he chases after her when she tries to explain that she got Cupid to do her dirty work for her and that the two should just break up. Then there's the part where Cupid removes the love spell from Brendon and he ends up falling down the stairs. Thankfully, he doesn't die from it, but it's implied that he's out of school for a few days so he can recover from his injuries in the hospital.
"Funhouse": A kid whose father left him finds an outlet for his rage via a fake family in a creepy funhouse, and his rage brings out the beast within him. Seeing him get crazier and more addicted to the funhouse is truly horrifying.
There's also the animatronic family within the funhouse. There are two adults and two children with blank white faces, who just make the motions of having a family dinner while the sound of gibberish plays through the speakers in their faces. However, the gibberish begins to sound angrier and more frustrated, until it's clear that the family is violently arguing and screaming with one another while one of the robots, a boy, is trying to cover its ears to block out the noise. Added to that is Chad's growing annoyance with the family in general. At first he scoffs at the idea of "Home Sweet Home" and then gets angry before he starts screaming "STOP IT! STOP IT! I HATE YOU! I HATE YOU!" And then he notices the giant mallet and the sound of someone saying "Destroy!" which prompts him to go to town on the set. And he goes back again and again...
Don't forget the owner of the funhouse, who seems to know about the kid and his life due to how he mentioned "Family dinner night". When the kid and his sister turn around, the funhouse vanished as if it was never there to begin with.
What's really scary about this one is that, much like the episode "Headshot," the real horror comes from the protagonist's inner demons (in this case, it's Chad not expressing his anger over his broken family, then expressing it through violence and literally becoming a monster from it).