I understand that you are dissatisfied with the behavior of that classmate, but we can also consider a more constructive way to deal with this situation. Although harsh words can relieve anger for a short time, they often escalate conflicts and may even hurt your own image and interpersonal relationships. Instead of using sarcasm and mean language, try the following ways： 1. **Humorous solution**: When he boastes, he can respond in a relaxed and humorous way, such as "Wow, are you going to receive a nomination for the Nobel Prize soon?" "Respond to his exaggeration in an exaggerated way. 2. **Selective neglect**: Sometimes ignoring these behaviors is the best response, and the lack of an audience tends to make this behavior subside naturally. 3. **Gentle questioning**: When he made an exaggerated statement, he politely asked, "This statement is very interesting. Are there any specific examples?" "This will not only lose his demeanor, but also allow him to reflect on his remarks. 4. **Looking for advantages**: Try to discover the reasons behind his behavior, maybe his boasting is out of insecurity. Finding what he is really good at and giving sincere appreciation may change the way you interact. Remember, truly wise people do not need to prove themselves by belittling others. Cultivating one's own strength and inner cultivation will naturally win the respect of others. If you always maintain a friendly attitude and firm self-confidence, people will appreciate your character more than his boasting.