Hey Pandas, Have You Ever Gotten Revenge On Someone Secretly?

My brother had some serious mental issues, but back then parents just didn't know what they know now and thought certain behavior as just something kids would grow out of. He was about 16 when I was 9. He used to really hurt me sometimes and my parents would always play it off as sibling roughhousing. But it wasn't. He pushed me into traffic once and I almost got hit. He pushed me out of a treehouse, hit hit me so hard he almost broke my jaw, he set fires and got into drugs very young... it was really abusive. They sent him to therapy but in the meantime I was getting hurt a lot and I was scared to tell because he would threaten me. So I broke up a glass once and put the shards in his face cream he used every night for acne. Cut the s**t out of his face and hands. They were mostly small cuts so they healed but oooo he was hurting for a few days. I know it was drastic but I didn't know what else to do. I felt like I needed to scare him. When he found out it was me he threatened to tell and I told him if he did that next time i'd put it in his food. He never really physically hurt me again after that and anytime he did I did something like that. He cut my hair off once so I put a sheet of thumbtacks sticking up in his pillow case. He eventually stopped simply because I was going to retaliate and finally figured out it wasn't worth it. Sometimes with a violent person the only way to get through is with violence. Therapy never really helped him and my parents tried, but never really were able to get through to him. But they definitely didn't protect me enough so I don't feel bad about what I did. I wish I wasn't put into the position of having to do it.