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How to be sassy yet not in a bullying way with comebacks
Use humor.
You will often sound more sassy if you can inject a joke into the situation. A witty comeback can go a long way towards easing any tension that occurs in social situations, at school, or at work.
Using humor shows that you are able to deflect rude comments in a playful and carefree way. Humor can defuse a tense situation, and make a bully reconsider picking on you.