What scared me? Lighting hit a tree about twenty feet away as I rode my bike home from school when I was 10. Had stitches in my eyelid the same year, but what scared me that was just nature...
On a double date as teenager we had gone up to a place called Poet's Seat. There is a small open tower there and a place to park and it overlooks the town I was living in. We had climbed the tower and once bored, retreated to my friend's car. We were just all talking at the time and as we watched lights began to disappear on the far side of town as the fog rolled down the mountain.
Slowly, but surely as we watched, light after light began to disappear as the fog crept over the town. It was getting darker and darker until the fog began to drift over the guardrail in front of us and started to surround the car!
We had seen enough bad horror films and we all said let's get the hell out of there! WE had to drive down our small mountain and the fog was so thick we could only see a few feet in front of us!
Until we got down to the bottom and all the lights where there. The fog layer was above the homes and if you didn't know it was there, you would have never noticed it. The dated ended shortly after as no one felt like making out that night.