Call for help. I'm an adult. My parents were at home when they went out. My big brother didn't come to my house to kiss me. He hugged me and pinched my thigh. I don't know what to do.

You can't swallow your pride, let alone tolerate him fooling around, for such a dirty ghost who doesn't care about relatives and friends and brother and sister. You know, if you give him an inch, he gets a foot. If you give him a foot, he thinks about it. Don't let him get what he wants. You give him an inch, you lose. For his gaffes, you should encourage resistance, drive him away and never allow him to come near you. He is not allowed to come when your parents are not at home. As long as you are strict with yourself and take his dirty style seriously, I believe he dare not invade your life. I hope you know more and more about protecting yourself.