What was the scariest thing you have ever seen on Halloween or otherwise?

Flesh-eating disease. I have seen it twice now. Really scary shit.

And that look in that guy's eyes. He looked right through people. No one knew what he thought. He was dangerous. Little guy. Long hair. Looked like Jesus. I never turned my back on him and neither did anyone else. He was brought in from the bush. And he wore a garbage bag. No one tried to take it off him either.