I had this awful dream/nightmare that I was at school and it was the last day.?

Well I was at school (I'm in high school) and I was in a bridesmaids dress along with my aunts and cousins and there was this huge party off to the left where the students were looking for 3 girls to be back up singers for this guy that went to my school ( I do want to be a singer one day) Well anyways everyone was hanging outside and I decided to go inside the school and to the cafeteria with my bridesmaids dress on and I sat at this table with some people that I knew but wasn't friends with and behind me were these girls and this dyke. I had my purse with me and in the purse was $10 my mother gave me. So this dyke behind me was saying "Oh I was going to pour this chocolate milk on your dress to see what you were going to do" so I just turned around and said oh. well needless to say she did it and I went crazy and had this sudden rage I never once in the real world had so she ran as fast as I've ever seen anyone run and jumped into a nearby trashcan. I chased her and knocked the trashcan over with her in it and everyone was cheering me on and I started beating the living crap out of her and I haven't faught since the 3rd grade I don't even know her name I just know she went to my school she's since graduated and I've never had anything against her I just don't like lesbians but I wasn't even thinking about that. Anyways I continued to beat her and no one not even the teachers stopped me except one girl tried to pull her away I finally stopped and went back to my seat and looked in my purse and my money was gone and a little extra happened after that but nothing important so..what does this dream mean?