You can discourage a person from being rude and sarcastic with just one phrase.
We'll tell you what to say to put a boor in his place.
How to put a boor in his place
It is useless to have educational conversations with a boor; don’t waste your time and nerves.
But you can “cut off” a boor so that he won’t risk making snide remarks in your presence again.
It is enough to say the phrase “Well, now everything is clear to me” in a calm voice.
This will confuse a boor who is counting on your anger and resentment.
You can also add: "So what they said is true." After this, the boor's wounded ego will take a long time to recover.
Previously we talked about how to build long-term personal relationships.