Weird Creature

I started up Minecraft, as usual. I've been playing for two years, nothing weird has happened yet. Then, suddenly, I was on a gray island. The grass was dead, it was all gray. I thought this was just part of a Minecraft error or a joke, so I went to go get some cows. Then, I saw a weird creature. It looked just like a cow, but red and with mushrooms. So I went to go make a post on a forum thread, when it suddenly popped up. The website kept sending me pop-up ads, it was getting in the way of my post. When I finally got through and posted it, it was taken down. I posted it again, and once again, it was taken down. Then I got a strange message. The admins said I was causing spam, and that I should stop posting. In case you didn't know, all of this was a joke, sounding like a generic horror Minecraft story, but with a few funny twists.