Family relations are tricky, and (barring the "obvious family no-nos") I'm not about the tell you what is and isn't ok within your family. There could exist a family where a stutter's speech is made fun of, and the stutterer would be ok with that. What is clear (and important) is that you're not ok with it, and things aren't going to magically change on their own; you'll need to say something. It doesn't have to be a giant scene. In fact, you might want to do it apart from the situation, one-on-one or in small groups). Don't let it go, though. I'm assuming you're planning on being around these people for the next 10-50 years.... that's a long time. It may be that your family/friends make fun of each other as a way of showing love. I don't know (you would), but it's not uncommon. What would be ok for them to make fun of? You might need to make a few suggestions. :)