Ok, I'll be the crazy one and share a story...and no I wasn't on anything, I was 13.
I was at my friend's house one night and we were looking out her back window. Suddenly we see a pillar of flames shoot up from the ground in front of her neighbour's shed. It turned different colours, and then it went back into the ground. A couple seconds later, we see a man walk into his backyard and into the house. I don't think it was demons, but it was weird. We looked at the shed the next morning and didn't see burn marks or anything.
Another weird thing happened with this friend. We were listening to a CD, and at the end of the CD there was a really warped mashup of songs that started playing. It probably wasn't anything again...but I thought it was demons because I borrowed the CD from a girl who listened to Marilyn Manson.