Arguments with the mentally disturbed.

[Doclector]

Little children always have to have the last word. You might not have gotten to tell him he was wrong, but at least you can feel good about not having resorted to pure nerd-rage to get your way.

Block him and don't look back.

The best possible solution in this case. Not to seem insensitive and all, but, damn, he's even less sane than me.

 

[Kwaren]

Learn to love the ignore function of whatever system you happen to be using. It makes things so much more peaceful.