How can i get this out of my head ? 0.0?

I was watching 127 Hours and when the Scooby Doo scene came ( when Scooby just suddenly appeared ) and it kinda scared me .... ( btw I'm 13 but i LOVE horror films so i DON'T get scared easily ... ) but the laugh REALLY scared me ... this is kinda the only thing that scares me. xD but is there any way to make this go away ?? I watch comedy ALL THE TIME btw :) so that isn't really helping