Dealing with friction between colleagues in the workplace does require a certain amount of wisdom and skill. Using sarcastic words can express dissatisfaction to a certain extent, but be careful to avoid causing greater conflicts or misunderstandings. Here are some moderate sarcastic expressions for your reference: 1. "It's amazing that your efficiency always gives us more time to enjoy coffee." 2. "It seems that you are a master of time management and can always find more time to rest." 3. "Thank you for reminding us that there are so many other wonderful things besides work." 4. "You are always so calm, it's really hard for us to learn any sense of urgency." 5. "It seems that we have to learn from you how to stay so leisurely at work." Warm Tips: Although moderate humor and sarcasm can ease the tense atmosphere, direct and constructive communication is usually more effective in the long run. You can try to have a frank conversation with the colleague to understand the reasons for his lack of enthusiasm and find solutions together, which will help improve the efficiency and atmosphere of the entire team.