“Any thinking person would have to agree.....”
Interrupt him and ask “when did you become a conservative?”
You could also reply back with a few other of those old chestnuts that *always* mean the opposite of their actual words, such as:
“With all due respect...” (I’m about to grossly disrespect you)
“No offense, but...” (what I’m about to say is actually GROSSLY offensive)
“Don’t take this personally, but...” (I’m about to tear a strip off you that would make even a drill sergeant blush)
“You’re entitled to your opinion...” (no, actually I think you need a lobotomy for believing that)
Good idea. I’ll do it. ;o)