Put it at the end of a bill or checkout scene, so it closes the joke. Pair Sudden Suspense before the price reveal, then Oh My God Wow for the reaction, and let this clip deliver the final payoff.
Über diesen Sound
This is a three-second Italian voice clip that says 'e io pago', the words for 'and I pay'. The short line has a resigned, matter-of-fact feel, as if the speaker is accepting a cost they did not choose. That dry humour gives it a sharp edge, turning a simple statement about paying into a wry, knowing reply.