Search Results: losing a friend friendship

My best friends family mainly her sister and her mother, a rather rude to me. They make ignorant remarks towards me and constantly try to put me down. for instance this one day I went to her house to hang out and just for the record I was dressed in something cute. I was wearing a nice shirt and some shorts with tights underneath, not showing any skin all a matter of fact I was dressed normal. So her Sister walks past me and says and I quote "you are looking rather easy there darling"(I wasn't atall) i'm British so I've always been polite at their house and they have always been kind of mean to me, my friend says it's because they like me but my parents hate it and don't like the way they treat me. They've even gone so far as to stop me from going to their house. this one day I was in her mom's car, minding my own business when her mom says and I quote "someone should make a movie about you Courtney, about your sad life and how much of a nerd you're. In the movie they should even give you a transformation" I'm NOT EVEN A NERD! They are so rude to me, what should I do and how would you handle it? I've debated on losing my shit, &telling her sister and her mother to go fuck themselves but in their House you are not allowed to swear, there for our friendship would be over. i've left out a couple rude things they've said to me but my mom wants to beat her mother up it's that rude, that all you need to know