The scariest movie I saw as a child was:

[Silver]

Apparently, I was scared of Freddy Krueger and hid behind my father's armchair while the movie was playing. Strange, considering that I grew up to enjoy horror as my favorite genre.

[polymath257]

It's Alive.

Pregnancy and children have scared me ever since.

[Angrboda]

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Caution: Spoilers:

The storyline, which is largely faithful to the original television production, centres on the discovery of a mysterious object buried at the site of an extension to the London Underground. Also uncovered nearby are the remains of early human ancestors more than five million years old. Realising that the object is in fact an ancient Martian spacecraft, Quatermass deduces that the aliens have influenced human evolution and the development of human intelligence. The spacecraft has an intelligence of its own, and once uncovered begins to exert a malign influence, resurrecting Martian memories and instincts buried deep within the human psyche.

https://en.wikipedia.org/wiki/Quatermass...Pit_(film)

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[Anomalocaris]

Alien

[A. Secular Human]

"The Man With The X-Ray Eyes"

Produced and directed by the late, great Roger Corman.  Starring Ray Miland and a rare straight-acting Don Rickles made an appearance.

Scared the living shit out of me when I was about ten, after it came to TV.

https://en.wikipedia.org/wiki/X:_The_Man...X-ray_Eyes


A bit later, I was deeply affected by "The Zanti Misfits" on The Outer Limits.




The first time (after seeing the episode) that I saw an actual, real, live "potato bug" in my yard, I about shit myself.






https://en.wikipedia.org/wiki/The_Zanti_Misfits

[Jackalope]

I saw "Jaws" when I was ten - I still get the heebie jeebies swimming at the surface in deep salt water.

[The Valkyrie]

"The Man With The X-Ray Eyes"

Produced and directed by the late, great Roger Corman.  Starring Ray Miland and a rare straight-acting Don Rickles made an appearance.

Scared the living shit out of me when I was about ten, after it came to TV.

https://en.wikipedia.org/wiki/X:_The_Man...X-ray_Eyes


A bit later, I was deeply affected by "The Zanti Misfits" on The Outer Limits.




The first time (after seeing the episode) that I saw an actual, real, live "potato bug" in my yard, I about shit myself.






https://en.wikipedia.org/wiki/The_Zanti_Misfits

Looks a bit like a Weta.

[zwanzig]

I saw "Jaws" when I was ten - I still get the heebie jeebies swimming at the surface in deep salt water.

True story: when I was young, my best friend and I loved Ace Ventura Pet Detective. We didn't get over half the jokes in that film but Jim Carrey is practically a cartoon character in his 90's roles, so, we laughed our asses off and quoted/mimicked the movie like crazy. My parents went to show me Jaws for the first time in the late 90's and during the opening scene, I laughed hysterically. Creeped my parents out, until I reminded them of the Jaws parody scene in Ace Ventura with Carrey flopping around wildly in the shark tank.

[arewethereyet]

I was never a fan of horror flicks. I would watch psychological thrillers but am not a fan of gore...unless it's the Blade trilogy, but that's campy and a guilty pleasure.

I was babysitting late one night and reading 'The Exorcist' which was huge in the theaters at that time. I could deal with reading it but not so much with seeing it on the big screen. The kids were asleep and it was quite late and the house was at the outer edge of the neighborhood with no houses across the street and a park that was deserted at night in the other direction. As the book got more intense I was reading faster and faster when the dog of the house started barking. Pepper was outside the breezeway where I was sitting with the book. A man's voice thundered out of the night, "Shut up you son of a bitch!" I nearly needed to be scraped off the ceiling. Scared the bejebus out of me. That was roughly fifty years ago and I'm not sure my heartrate has returned to normal yet.

So, no...scary movies are a big "NO" for me to this day.

- Funny 'Jaws' is mentioned. I guess when you grow up with a deep sea fishing family you see through the "special effects" of that movie. I was actually sick and fell asleep about halfway through that one in the theater.

[Angrboda]

I saw "Jaws" when I was ten - I still get the heebie jeebies swimming at the surface in deep salt water.

Oddly enough, when I fell water skiing in the deep open water of Lake Superior, I always worried that a Pike or Lake Trout would come nibble on me. Silly I know, but I suppose all fears are.