Yell because mommy isn't helping you! Yell because nobody is helping! Yell because the nice man periodically steps forward to move the monster just a little bit closer to your face! Yell because you are so very small, and the world is so very big, and sometimes ... sometimes there are monsters.
A screencap of Pennywise the Clown has been up to promote an After Hours video for about a week, and it's in such a spot that it scrolls down with you as you read an article. This has led to a meme about how Pennywise is stalking the readers.
24 Small Things You Don't Miss Until They're Gone. While some are goofy, like Batman not having the pointy ears or Michelangelo's David not having a penis, others are scary, like the two pictures of women with no lips and the puppy with no iris.
One of the stories in Part 5 is so infamously terrifying that even the commenters won't stop talking about it. It involves a man in Japan finding things in his house disappearing and ending up where they weren't before. He decides to set up cameras to find out who's doing it. When he examines the tape, it shows a strange woman crawling out of his cupboard. Then, at the end of the video, she crawls back into the cupboard. The same cupboard that was a few feet away from him while he was watching the video. He calls the police, and they find out she had been there the whole time, eating and even taking showers. Paranoia Fuel much?
Greatest Medication Side Effect Ever! is not really that much Nightmare Fuel... until around the two minute mark, when it shows us what the teleporting feels like. Basically, you spontaneously disappear into a black void and are greeted with a bloodcurdling unearthly screech and a flurry of shapeless red... things flying in all directions. And due to Power Incontinence, it can happen at any given moment.note In fact, right after that scene, it shows a guy who teleports every few seconds. He's more annoyed than frightened, though.
5 Shocking Realities Working With Disturbed Children. In short, it's a living hell for both the faculty workers who are not trained enough to deal with whatever chaotic situation that will come up (and by chaotic, I mean things like kids bashing their hand open with a hammer, smearing poop on their teeth, all manner of horror) and the children who find themselves in a shitty situation they never asked to be in.