I have to say, I am totally confused and still shocked about what happened last night. The nightmare lasted for about 30 seconds and it was part of another dream I was having.

I was having a wonderful lucid dream as real as life. My friends were there and we were talking in some room in a house. I looked to my left and I saw a mirror that appeared to be on a wardrobe. I looked into the mirror and then it happened.

I saw a woman, she was moving towards me out of the mirror. I thought this was rather strange but then she turned absolutely EVIL! I have never felt such evil before in my life. It was like all negative intention, all hurt and suffering in the world was coming from this woman. She started transforming into a terrifying demon or monster and was still moving towards me. Everything turned black and red and the world seemed to flicker.

I'm a 21 year old man, and I'm posting this saying it was the most terrifying experience I've ever had. I could feel my physical body trying to free myself from the woman, grunting and thrashing about.

I remember half-waking which ended the dream. I went back into the dream and I told my friend about the lady in the mirror. He said "You can see in the mirrors?". I suppose it's like one of those 'lightswitch' things were most people don't turn on lights in their dreams.

The thing is it was so random. I mean, imagine your talking happily amongst your friends and all the sudden someone comes up to you and starts screaming loudly then runs away.
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The only thing I can think of that would cause this is I had a single beer earlier that day with my friends. I barely ever drink though.