What is the worlds scarriest story?

This is the worlds scariest story!!!!:

There was a man who lived by himself apart from his dog. Every night the man ate a biscuit and drank some milk with it, and every night, his dog licked the crumbs of his hand. One night, the dog's tongue felt different. Softer. The man decided to think nothing of it and went to sleep.

That night, the man woke abruptly to hear his dog barking in terror in the kitchen of his house. Worried, he went to see what was wrong. You can imagine his surprise when he found the kitchen empty apart from a suspicious looking red substance. He went back upstairs thinking he dreamt it. On his way to his bedroom, and he saw a flicker in the bathroom. He opened the door and gasped in disgusted Horror. Moving towards the mirror, the source of his dread, he looked closer to see the same strange red substance, now completely obvious to him what it is, smeared all over his mirror. Blood. He saw the shower curtain twitch and went over to investigate. Puling back the curtain, he staggered in confused disgust at what he saw. His dog, covered in its own blood. Not able to make it out before, he read the message on the mirror, it read, " Humans can lick too."