I checked this out mainly because I began my own Terror Tales of the Park story recently, and I love horror anyway. Honestly, I liked the idea here, and the talking decapitated heads thing was even an idea I had but with no idea how to do it yet, so I didn't yet (it was funny the way you did it in this story by the way). This did seem like an actual Regular Show TTotP story tbh, and you did know how to end the story on a scary note. Also, I agree. Stupid characters in horror is a trope that needs to end already. However, there are some things you need to work on tbh. Your sentences outside of the spoken dialogue are way too long, and often repeat what the characters had just said. Speaking of repetition, you brought up the characters being stupid way too much (one example). Also, you explained what happened in some situations up to four times (maybe more. I lost count lol). Also, if you can avoid using a word more than once in the same sentence, try doing that. Most people don't talk like that. Aside from the things you needed to work on, I actually liked this story, I'll admit. It was a good effort :D