I am 15 years old.Today at school I was eating some lunch at a table and I noticed people a few tables in front of me kept turning their heads and looking at me. I was kind of staring into the space in front of me, but I noticed that they kept turning their faces to look at me. This freaked me out. I kept wonder why they were looking at me and and getting more and more panicked about what they might be saying about me. I started talking to myself and couldn't stop, and I told myself to stop talking to myself over and over again (both in my head and out loud), but I couldn't stop. Then one of them came over and asked me to stop staring at them. I explained to her that I was just staring into space and she walked away, but soon after a few om them looked back at me with mocking grins and I just lost it. I put my head down and started crying when I didn't actually feel like crying. Then I told myself to get it together and then to stop talking to myself. I wiped off my tears with a napkin and then I started laughing. Not a normal, happy laugh; it sounded like a crazy person laughing. I couldn't stop laughing. Everytime I stopped for a moment, I would tell myself to stop laughing and then to stop talking to myself. WHen I tried to stifle the laughs I made weird noises. This continued when I went back to my class. A few girls noticed I was making strange sounds and started laughing at me. I just ignored them. It went away about ten minutes I got back to class and I felt kind of drowsy. What does this mean?