Whoa, I love those pictures!
As to the running away. I can remember when I was about 17, we [friends] used to scare ourselves with stupid things. Once for example we thought that a completely normal light in the sky [probably a star] was a UFO. Now nobody started off scared but we seemed to hype each other up. Its a strange feeling, it seemed to creep up on you and became more and more real until we all freaked. I mean completely irrational freaking, mixed with real fear. This happened several times [once in a cemetery at night, another time just by talking about the universe]. The main thing I'm trying to say is that in none of these cases was there ever a real threat or anything weird, we just talked each other into that state and yes it sometimes ended up with us legging it as if the devil himself was after us for no specific reason at all.
Maybe it is a thing that happens to younger people as they don't yet have the rationale.
The reason that you forgot about it might simply be because nothing actually happened.
Still I love your story and you should never say never
It was quite late maybe 10 or 11pm. Everything was closed and there were hardly any people around. I was about 19 and my friend was 18. We had been to a restaurant and decided to walk through a small park in the middle of the city so we could smoke a joint. We finished the smoke and as we were about to exit the park, I noticed a rather large man all dressed in black, sitting on a bench. We were going to have to walk past him to leave the park. I leaned in close to my friend and quietly said, "Wow, look at the size of that guy. He must be over 7 feet tall!" My friend hadn't noticed until I pointed him out.
I tried coughing really loud to get his attention. He didn't move at all. We were about 60 feet away when my friend asked, "What's he doing? I said, "I don't know." I felt fear starting to rise in me and at that same time my friend snuggled up to my arm and said she was scared. We slowed down our pace to a crawl, barely inching forward. By the time we reached the bench we were both visibly shaking. That's when we could see it was a detailed iron statue of a man sitting on the bench. We both cracked up laughing. It was such a relief.