Nowadays, my answer to rudeness is to withdraw from engagement with those who offend me. I regard ignoring someone who tries to provoke me as being far more insulting than calling them 'wanker' or 'thick cunt'.

There are a couple of pieces of work on this forum whom I hold, for various reasons, in the highest contempt. I try steadfastly to ignore anything and everything they say - far more satisfying than engaging in school-yard name-calling and, as a bonus, they are denied any satisfaction they may have gained from such an exchange of insults.

But, it's each to his own...