I was dating an older guy friend of mine (Taylor) that was heavily involved in the world of ghosts.
He was not only able to see and interact with ghosts (which at times got really scary), but he was able to see...other things.
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Christ, this freaked me out. I hope you're okay, I definitely wouldn't have been able to handle all that stuff.
The only freaky stuff I can think of right now are two incidents: one that happened over ten years ago and another that happened a week or so ago.
When I was 3 or 4, my dad got up really early to work-- usually at 3:30 in the morning. Since my room shared a wall with my parents', and the house was really small anyway, I would usually wake up when he got up. One time I did so, my mom told me to go back to bed and that she'd come tuck me in in a little bit.
I used to keep a bunch of toys on the floor because I was (and still am lol) a slob. Most of it was Fisher Price stuff, and I had this green car that I would put my dolls in.
Anyway, when I went in my room, all of the toys were moving, but I couldn't see anything in the room. Suffice to say, I freaked out and ran out into the hall. I think I slept with my mom that night.
The second thing that happened a couple weeks ago is maybe a little unremarkable, but it still wigged me out. In the house we live in now, there's a big window in the living room, next to the stairs. We have a split level house, so the upstairs isn't really that high off the ground. Above the main doorway (which is located in the middle of the stairwell), there's another window.
So one night I was up there, and I happened to see a person with dark skin and all white clothes on standing very, very still on the sidewalk facing my house. I watched them for awhile, but they didn't move at all. I moved back towards the stairs, and all of a sudden, I saw them flash by really fast-- too fast for where they had been positioned before. It really freaked me out.
I also have a friend who used to live in this creepy house with her siblings, one of whom is much younger than us. One time, she was home alone, taking care of him, and all of a sudden they hear this tapping sound coming from the floor, below them. Her brother starts tapping back, and tells her that someone's talking to him. It freaked her the hell out, especially since stuff like that had happened to them (specifically her little brother) before.