In The Long Kiss Goodnight, Samuel L Jackson says at one point, "When you make an ASSUMPTION, you make an ass out of you and... <realizes the mistake> ... and UMPTION!"
Fool me once, shame..shame on..you. Fool me twice.......a fooled me can't get fooled again.
That was a smart one; an American president must never produce the soundbite "shame on me" or the spell will be broken.
Our enemies are innovative and resourceful, and so are we. They never stop thinking about new ways to harm our country and our people, and neither do we!