Oh! Did you describe all this more fully in the old post? For example, did you see it at night? Do you remember which thread it is?
I'm not 100% sure I told the story in an old post, though I think I did -- if I did, though, I don't know which thread it was/is. So here's the story:
From a young age, my sister and I used to spend about 6 weeks of the summer with our grandmother at her house in Philadelphia. For quite a few years we would do so one at a time, taking turns -- I'd go up for 3 or 4 weeks, then I'd come home and she'd go up for 3 or 4 weeks. For the last few years of doing it, though, we both went up at the same time. When this incident occurred, I was probably around 13 or 14 years old, and my sister was about 4 years younger, and we were both at our grandmother's. It was probably July or early August, I know it was very hot. Our grandmother did have an air conditioner in the bedroom, but she ran it sparingly as she was on a limited income; it was not on this night. All three of us slept in one bedroom. The bedroom had two twin beds; our grandmother slept in one, and we separated the other into the boxspring and the regular mattress, with my sister sleeping on one and I on the other (we alternated who slept on which).
The incident did occur at night, and on this particular night my sister was sleeping on the boxspring and I was sleeping on the regular mattress, which was laid on the floor in such a way that I could see out the open doorway into the hallway and the back bedroom directly opposite, down the other end of the hall. My grandmother and my sister were asleep, but I was fully awake (I had not yet fallen asleep). I happened to look out into the hallway, and saw two things -- a vaguely human-shaped being of light standing in the back bedroom, and a smaller thing made of the same light, set on the floor in the middle of the hallway (so halfway between the humanoid figure and me). The smaller thing was about the size and shape of a horseshoe crab, minus the tail -- like a small, raised dome made of light. Neither the human-shaped being nor the little thing in the hallway moved at all. They were both made of light in a whitish, slightly yellowish hue. Neither one actually threw off any illumination to their surroundings, they actually consisted of light. Both looked solid, neither was in the least bit see-through.
I hate summer weather -- I hate the heat, I hate the humidity. I was so scared that I climbed into the little twin bed with my sister and spent the rest of the night there, sweating. When I climbed in she asked me what was going on, and I told her I'd explain in the morning (which I did).
We saw and heard other things in that house, but this was the only time I ever saw this particular thing (well, things).