Getting a gun pulled on me for the first time i have to say would be the most realistic scary thing i have faced. I didn't know how to react, specially since it was a .357 and i could look right down the barrel of the gun and see each round. Luckily for me the person had no intention of using it on me they were scared they heard something and just had it pointed at me because they were freaked out, just the fact it happen to me when i was like 13-15 made it extremely scary. Now i just laugh when people pull a gun on me, which happen recently. I just laughed, "no one is that stupid to kill someone over $10" i said. They ended up driving away b/c it was in a full mall parking lot. Lol
Also what other people would think is scary is Talking to a dead little girl in my friends basement. We were there trying to communicate and as we where sitting there we heard a little girl laugh at us twice then said something I tried talking back, but then everyone wimped out and turned on the lights. I can't say it is scary due to the fact that ghost are not real and we all thought we heard the same thing, but that was probably due the magnetic brain waves thing that is to complex to explain in a forum post but feel free to look it up. The mind is stronger and the fact we only use 10% of our brain means if we use more or less it affects our sight,sound,smell,ect... So really if you think about it that way nothing is really scary except for humans.