In a debate, it is very important to remain rational and respectful, even if your goal is to make your opponent lose his cool. Here are some strategies that may make your opponent more nervous or lose his cool, but use them with caution to avoid unnecessary conflict or damage to the relationship: 1. **Reveal contradictions**: Point out the contradictions in your opponent's arguments and keep asking questions to make him unable to justify himself. 2. **Use data and facts**: Use solid data and irrefutable facts to support your arguments and weaken your opponent's position. 3. **Attack logical loopholes**: If there are logical loopholes in your opponent's arguments, you can keep highlighting these loopholes to force your opponent to admit mistakes. 4. **Stay calm and composed**: Stay calm in the face of provocations, which will frustrate your opponent because they will find it difficult to make you lose your cool. 5. **Ask tough questions**: Ask questions that are difficult for your opponent to answer, or those that may expose his knowledge gaps. 6. **Use sarcasm and humor**: Use sarcasm or humor at the right time to make your opponent feel uneasy without appearing too aggressive. 7. **Lead the opponent to repeat wrong ideas**: Keep asking the opponent to explain his arguments and pretend not to understand to put him in a difficult position. While these strategies may be effective, always remember that the purpose of a debate is to foster communication and understanding, not to humiliate or be hostile. Stay polite and professional so that the debate remains constructive.