Halloween night I went out with my two friends dressed up as vampires. When we got home, rather buzzed, we all fell asleep in my bed. I woke up in the middle of the night and dressed out of my corset and drank some water. The next morning I took a shower and when I got out I noticed my arms were completely covered in scratches. Initially, I thought my dog had done it but when I looked more carefully I saw that they were all perfectly spaced, about an inch apart, and done with what looks like a thumbtack. I talked to my friends in the morning and they were just as dumbfounded as I was. My boyfriend was very upset when he saw them and I explained that I have no recollection of them happening. Also, there were three scratches on my stomach, which means it had to have happened after I changed out of my corset in the middle of the night. My dog was sleeping with us as well and he would go nuts if someone did that to me in the middle of the night. My boyfriend scratched me a couple mornings later with a thumbtack to see if it would wake me up, and it did instantly. The only conclusion we have come to is that I did it to myself, although I have no recollection. The thumbtack I must have done it with is located within reaching distance of where I sleep, holding up a tapestry. The scrapes were so perfect, not one deeper than the other. I feel like I wouldn't be able to make those scratches soberly and awake, let alone drunk and passed out. I know my friends very well and I know they would never do that to me, plus my dog would freak out if they did. This may be completely unrelated but my roommate on the top floor of the house swears he heard something in his room the last two nights, starting on Halloween night. I am not one to believe in anything paranormal, neither is he. Nothing like this has ever happened before, I am not depressed, I am a 20 year old musician and I just want answers, though I am partially afraid of what I might find out.