Place it as the payoff after the order is shown, not before, so the viewer sees the size first. Follow it with a short reaction sound for the group's response, then cut back to normal dialogue before the next scene starts.
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This eight-second clip is a fake fast-food ad voiceover for Carl's Jr and its oversized Big Ass Taco, delivered like a straight commercial pitch. It feels absurd and shameless, turning a normal order into a ridiculous brag about excess. It comes from the satirical film Idiocracy.