One time when I was sleeping upright, I went into a sleep paralysis state. I could actually see everything, but I couldn't move. The room had a sepia tone filter look to it and a young guy in white clothes walked through the room and when he noticed I was conscious, he was just like "Oh hey, I'm a friend of Tim's" and just kept on walking into the next room.
I didn't know anyone named Tim and there's no way anyone could have gotten into the house. All the doors and windows were locked. So, that was pretty odd.