The last time I was at a carnival was my first date with my first girlfriend in high school, before cell phones, and when cassettes were still a vibrant medium. She demanded that we ride the Ferris wheel, and I have a crippling fear of heights. I spent the whole ride clutching the center pole with my eyes shut because I was certain I was only moments away from death.
Let's just say that she never let me forget it, and she still brings it up today at every opportunity. So no, what happens at the carnival doesn't stay at the carnival, and will haunt you decades later.