When I was 11 years old my family visited London and we stayed in these old apartment buildings. One night I woke up and saw three unmoving ghostly shapes in the air at the edge of the bed. I was terrified, but I convinced myself that it was obviously a dream. So I pinched myself and nothing happened. They were still there. They had the general shape of a human, but no features were distinguishable. I hid my face under the blanket, hoping that when I looked back up again they would be gone. They weren't--they were still there.
Eventually, they disappeared. I hid my head underneath the blanket and I must have fallen asleep because the next time I woke up it was daylight and they were gone.
I am not making this up and I know this was not a dream. I don't believe in ghosts or even in a supernatural realm, but this was just weird. The mind does crazy things!
If I did believe in ghosts, I'd say this was a legit ghost sighting.