Make them look ridiculous

I just had a (rare) cool idea! The best way to destroy and disrupt a mean slur is to make fun of it for its cluelessness. I shooting off a note right now to the Kerry campaign advising them to start making and selling spitball kits. Perhaps use the line, "When it comes to defending the country, John Kerry is dead serious. But when it comes to defending against Republican slurs, spitballs do the job."