What are the effects of a rude insult?
According to an in-game hint:
Continuations can be broken with “rude” insults that score 16 or higher.
Continuations are when a conversation is put on hold by selecting (...). Rude insults will make your opponent lose their in-progress insult.
However, I do not know if this is the only effect. I have previously seen rude insults score 15 points or lower, so a score of 16 is not guaranteed.