This might be the most terrifying thing on the internet.

You know how some things are scary because they can really happen? Ghost videos, and things of that sort are scary, because there's no explanation, and a sense of unknown. Then there's those things that can really happen, and that's what makes them scary.

There's always been those supposed tall tales of alligators in the sewer. Who knows if this one was flushed down the toilet when it was a baby, and just grew from eating rats along with your nightmares.

Well...here it is:

Be honest...you moved away from your computer screen when you heard that noise, didn't you?