Place it immediately after the claim you are calling out, while the claim is still on screen. Follow it with the Oh Brother This Guy Stinks Sound Button for a second layer of disbelief, or close the sequence with the Mission Failed Sound Button when the bluff completely collapses.
About this sound
This is a 1.4-second voice clip of a Trump-style voice delivering a blunt put-down that calls Douglas fake. The delivery is short, flat and accusatory, landing like a sudden call-out in conversation. It feels mock-serious and confrontational, funny because the charge is so direct and personal for such a brief moment.