Hi, it sounds abusive to me. Enough is enough. Try to take the next step after you tell them enough, get up and walk away and tell them no more. Sometimes when people feel bad about themselves they put others down. I know how hard it is to take up for yourself, especially when your being confused by being the brunt of their hurtful humor then sarcasm, and then being put down even more. You are confused because they are confusing you. This is a life lesson you will have to learn, their are lots of people like that in this world. Little by little you will learn to deal with it when these people come along. Your okay just the way you are.