The Pope and (insert your target politician name here) are on the same stage in front of a huge crowd.
The Politician and His Holiness, however, have seen it all before, so to make it a little more interesting, the politician says to the Pope, "Did you know that with just one little wave of my hand I can make every Democrat/Republican (you choose) in the crowd go wild?"
He doubts it, so the pol shows him. Sure enough, the wave elicits rapture and cheering from every Democrat/Republican (you choose) in the crowd. Gradually, the cheering subsides.
The Pope says "That was impressive. But did you know that with just one little wave of MY hand I can make EVERY person in the crowd, both parties, go crazy with joy?
This joy will not be a momentary display like that of your subjects, but will go deep into their hearts, and they will forever speak of this day and rejoice."
The politician seriously doubts this, and says so. "One little wave of your hand and all those people will rejoice forever? Show me."
So the Pope smacked the Politician.