Step 1. Purposefully misinterpret the opponent’s argument to make it easier to attack.
Step 2. Use emotion to your advantage. Turn the opponent into a villain by making their opinion seem inherently ignoble and cruel.
Step 3. Call them an idiot.
Step 4. Appeal to the crowd. If most people agree with you, then you’re most definitely right.
Step 5. Ask for evidence for opponent’s claims. If they have any, ignore it. If forced to look at evidence, ridicule their credentials instead of investigating the claim objectively.
Step 6. When asked for evidence to show that you are correct, just say it’s obvious and everyone already knows x or y is true. Step 3 can be used in conjunction with this step.
Step 7. Use an exception to prove the rule. Smoking is healthy because my grandmother died at 104 and smoked her entire life.
Step 8. Tell them they are ignorant at best, and intellectually dishonest at worse.
Step 9. Insist their argument is disingenuous because nobody could be that stupid.
Step 10. Call them a butthole and move on with your life.