Saddam laughed at them, especially when they chanted the name of their pissant Imam, Moqtada al-Sadr. You can hear him on that jerky cellphone video sneering, “Moqtada?”
Never flinched, not once. You try that: going to the gallows with your blood enemies screaming insults at you. See if you can hold your bladder, never mind answer back as fast and calm as he did.