Here are some ideas, but before using this kind of sarcasm, be sure to consider the other person's feelings and the overall atmosphere of the class to avoid causing unnecessary conflicts or harm. If you already have a foundation for joking and teasing, the following expressions can be used as references: 1. Hinting at different time concepts "I'm beginning to wonder if we use different clocks... Someone secretly told me that your 'standard time' is never on the same channel as ours?" 2. Using news reports to tease "Breaking news: It is said that a certain 'late champion' has topped the list again, setting a new record of 'unparalleled late artifact', everyone come and watch!" 3. Borrowing famous quotes "Some people say 'the early bird catches the worm', it seems that our 'night owl' is more suitable for the label of 'late bat'." 4. Flattering and reverse complimenting "Every time I look forward to the 'mysterious guest' appearing on time in class, your performance really makes our class full of suspense!" These sentences try to focus on teasing behavior rather than directly attacking personality, which can not only express your helplessness and humorous attitude towards the phenomenon of lateness, but also leave room for everyone to smile knowingly. Of course, it is best to use it when the atmosphere is familiar and both parties feel that such mutual teasing is a friendly game. Once again, humor should be used in moderation. The key is to focus on the behavior rather than the individual.