This happened to me around 7 or 8 years ago when I was in second grade. It was kind of like a ghost virus. Whoever was told about it saw the ghost. So inevitably I was told. But, I just brushed it off as a joke.
That night I was lying in bed trying to get to sleep when something tapped at my window. Thinking it was a branch I decided to ignore it. But the more I tried to the more urgent the tapping got. Eventually I couldn't stand it anymore, so I lifted up the curtains and came face to face with the most horrible thing I have EVER seen in my life to this day. It was this black face, and what was worse it didn't even look as if it had EVER been human. The face was pitch black with blood on it, and it was just a face, not a whole head even. It ended at the cheeks.
So I was staring out at this black bloody face. Then it looked directly into my eyes and I felt like I was being searched or something. Then it was over as soon as it started and the face just floated there for about five seconds and suddenly moved its mouth into the form of someone screaming while laughing maniacally at the same time. Then it started trying to get in. It backed up and rushed the window, and I shrank back certain that the window would break, but instead when the face hit the window, there wasn't even a noise.
That did it, I got up out of bed and quickly went to my door, it was still trying to break the window. I left my room and I heard tapping on our skylight, so I looked up and saw it again. This time though it had teeth- fangs actually. Once again it was trying to get in. I ran into my parent’s room certain I would see it again. And to my horror my parents had their window open, (it was the very start of school, so August 10th). I quickly lay down by the bed hoping to god that this thing wouldn't find me, so I looked up to check if it was there, and I saw it at the window. It smiled. One thing I can say is that I will NEVER forget that sight. That smile just scared the heck out of me. In fact, it was so terrible that it's actually indescribable, but I'll try. It was like the smile of a demon, horribly inhuman but at the same time, you know it once was (even though it didn't look like it at all). And the face just kept smiling and smiling at me.
Then came the worst part: It found it could get through, it moved forward, came through the open window, and rushed at me. All of a sudden I couldn't breathe, I heard maniacal laughing in my head, and then it stopped, over as soon as it started. The next morning after I woke up, (I had crawled back to my room) I thought it had been a dream. I rubbed my eyes to "get the sleep out" and went to the bathroom, I looked in the mirror and saw my face had black soot on it.