I always love it when I'm involved in a heated argument with someone in the comment section of a post. Then the person dropped one lengthy comment with high expectations that it will get to me very badly, and I'm gonna reply really so fast. Then I just look at it and replied with a simple “Okay”.
That way I don't stress too hard on replying, and I just gave him the feeling that he had won while I continue with better things that deserve my attention.
The thing is; it's not in every argument that you try to prove your points. Sometimes it's unnecessary. A times, it doesn't take anything from you to keep quiet no matter how right you are. “Jesus didn't die for you to come and be sweating on someone else's ignorance”.