Article: If you stop them from insulting you, they will get frustrated and try harder. If so, interrupt them and pick apart their insults. If they are frustrated, you have essentially won. Frustration is the equivalent of an armbar in martial arts, you haven't won yet, but you're about to. This point is critical. You have the choice to either apologize at this point or continue and send them into a swearing or crying wreck. You need to feel when they're frustrated.
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Interrupt them when they insult you. Accept that you won.