I think F'n will do what worked for him in the Weld debates: belligerence. We all know how this will work if he applies this to our President.
I also think he will attempt to be human, smiling occasionally; maybe removing his coat. Watch the eyes, though. They will never match his artificial smile.
And watch the lizard tongue. I doubt he can restrain it for 90 minutes.
I had forgotten about that, but you're right - we'll undoubtedly be seeing a lot of that nasty thing tonight.
Any bets as to how many times his tongue escapes his pie-hole? I'm going to guess about 45-50.