You can't throw curveballs at them. It's entertaining to watch them try, though, because they're prepared and will put them right back in their places. Don't bother trying to insult their knowledge, it'll only put your lack of it on display.
Check out the sneak peek reel of today's FAITH & FEEDOM SHOW with Shemane Nugent and special guest, (Ret.) Col. Derek Harvey Watch live at 10AM ET.