I feel for you, and hope this advice might help/. It does not seem your sister is homophobic, but she is abusive, and mean. I know it hurts, when someone makes fun of you. Even your sister has been, and will in the future be make fun of, as you will, as I will, as everyone will once in a while. The mature thing to learn, is to, handle it. First I want you know when I was your age, my friends in high school, called each other ***, ferry, girly man when we wanted to make fun of each other. And we knew we had a few friends who were gay, but we just never talked about it. I really did not think about being gay or strait. When I was 25, and gay man was harassing me, until I beat him up. It took a few months but he apologized, and eventually we became friends. But yet I still did not think, about it. It s not until a manager, thought I was gay, and mistreated me. I choked him for about 5seconds, and said if he ever mistreated me or insulted me in public I would hit him. It also finally got me to think about being gay or strait. I am not, but no one should be mistreated. If we all gay strait, black, white, do not stand up to the evil who singles out one group, and mistreats them, we are saying someone else can mistreat us. Its not what people do to you, but how you deal or handle it. One way, in public, after your sister, mistreats you, talk about something embarrassing, about her. Like, true or not, say, by the way sis, you left your period undies on the floor in the bathroom, this morning. Or, sis, I found your vibrator, the 12" black one, in the dryer. You might need to get a new one. She will get mad. So just tell, her, if you do not stop abusing me, calling me names about being gay, I will keep embarrassing you with your friends. and The next time, I will make things up, that are even more sick. However, I always say, give her a 2nd chance and tell her first, that she is being abusive. That what she says to you hurts your feelings, and you want her to stop. In will not hang around you much if you do not stop. And if you do not stop I will tell personal things about you to your friends.