[header] How to be sassy yet not in a bullying way with comebacks [title] Use humor. [step] 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. [substeps] Humor can defuse a tense situation, and make a bully reconsider picking on you.