Funny, isn't it? The first time ya see something like that when you're 12, and your buddy has HBO; It pretty much scares the hell outa you. But now? Not so much.
Also when I was 12, my buddy's 21 year old brother jumped up and screamed at us during that final scene when Jason flies out of the water to attack the girl in the boat! We both screamed so loud we woke up the whole house! haha...