My first scary movie was the Incredible Hulk. I was 7 years old and at my babysitter. I was scared of how angry and green he looked. The way he turned green was just creepy to me. I'm not sure if it was the live action TV series or movie, but all I know is that I went home and was scared of the color green for years afterward. I even looked up 'Incredible Hulk' on Google and I shuddered on the inside.
I was at a friends for a sleepover and his older brother dared us to watch The Exorcist as it was going to be starting later on that night on the satellite. I reckon we must've been 8 or 9 at the time and it scared the crap out of the both of us
For me it was the first Alien film when I was a kid. But that movie didn't scare me. I thought it was amazing so I watched it again and again along with Aliens.
The first scary movie I saw was the "night of the living dead", I was 10 years old. This is a movie about zombies. At that time, after watching it, it haunted me for a long time; However, it was the background to later turn me into a zombies movie addict 😀