Not to his face. That would be downright rude.
I would, I'm in that whole, don't say anything behind something behind someone you wouldn't say in front of them
although I admit, so as to keep him from tuning out in assumption that ALL my arguments were invalid I would perhaps improve the eloquence of my statements and only bring my best researched reasons for him being a sack of **** along
edit: by the way, "you" the american everyone, is an apathetic moron, if that creature is the person of the year it's only because they faile to actually improve life for themselves yet again in a meaningful way