Place it immediately after the unbelievable line in a reaction edit, then follow it with Bruh as a second reaction and Emotional Damage when the joke needs a bigger payoff before the cut.
About this sound
This is a short, roughly four-second clip of a man exclaiming 'Uhh, doido!' in an exaggerated, wide-eyed voice, stretching the final word for comic effect. It lands as amused disbelief, the sound of hearing something so strange that a straight reply feels impossible. It works best as a quick, theatrical reaction to a wild claim or a moment of pure confusion.