What's the creepiest thing you've seen on the Internet?

Spiders really get to me. I’m arachnophobic, so whenever I come across a high-definition picture of a big, hairy spider, I’m so scared that I end up throwing my phone. I once broke a brand-new phone doing just that, lol.
 
There was this website my "troll" friend sent me once—something called Kekwa or Kekma. The content was horrifying. He sent it to me at 2 a.m. while I was up late working on a Unity project.
 
One dark video that has really stayed with me is of a biker whose lower half was completely torn off after being run over by a truck. Despite the horrific injury, he was still alive, just staring at his dismembered lower body in utter agony.