The best way is to just ignore them and focus on the rest of the people you're with. Take control of that social atmosphere. In 1 on 1, the Fe polr type really doesn't give a shit if you insult them. If you really need some 1 on 1 defense Fi is the best way. Just call them fuckin assholes or something like that. Target the Fi.. their wimpy side will come out and then you can trample on them.