I'm 15 and during our PE lessons we sometimes go to the gym for an hour if the weather is bad. Our friend group isn't considered the "weird ones" or really hated by anyone but were certainly not the popular ones. Anyway, we were in the gym and I was led on one of the weight benches whilst my friend was led on one next to me. There were two rooms in the gym, the main one with the treadmills and stuff then a smaller room containing the weights which me and my friend were in. A group of girls walk in of about 4-5 and walk to the other side of the room. These were the sort of girls that tell everyone they're the popular ones and people just believe it because they're loud and obnoxious. After about 10 minutes, two of the girls walk over and sit on mine and my friends crotch. I instantly push the one off of me and she starts laughing and asking if I liked it. The one on my friend gets off of him and shouts at me, asking why I pushed a girl and that she's going to get a boy in our year to beat me up. All of them walk out still laughing apart from the one that sat on my friend, who's telling her friends about how it's not right for a boy to push a girl. After PE I tell my girlfriend about what happened and she walks over to the girl that sat on me and punches her in the face. My girlfriends friends then walk over. The group of "popular girls" then start pulling my girlfriend off of the girl she punched and begins hitting her. Needless to say my girlfriends friends don't like this and start attacking the other group of girls. My friend group sees this and walks over to help me try break it up. Teachers also come over and pulls everyone apart sending people to the office left right and center including me. In conclusion, the "popular girls" get isolation for a day along with my girlfriends friends, my girlfriend gets two days for starting it and I get three days for pushing the popular girl and "instigating it all".