I was a real bitch when I was younger.
My best friend had a thyroid problem that caused her to be overweight, for real. Instead of being a good friend I told everyone in our clique that she needed more exercise and it was up to us to make sure she was working out. So me and like 6 other girls, would chase my best friend around and hit her with sticks if she stopped running. This one time in particular she fell down and started crying but we just kept on hitting her real sadistic like.
Another time we were playing truth or dare at some girl's slumber party and some one dared her to go out to her backyard naked for 10 minutes. While she was out there we called the boys in our class that lived nearby and they came over and laughed at her. We had locked the doors so she couldn’t get back in. Her mom finally came down to see who was knocking on the door, we all stayed down in the basement and when her mom asked us what was going on we told her that the girl was having sex.