Place it immediately after the betrayal moment in your edit, then follow it with the sad violin for a longer fallout, before closing with kids cheering once the joke has settled.
About this sound
This is a very short spoken reaction, lasting just over a second, in which a voice delivers the Portuguese line 'partiu meu coração' — 'broke my heart' — with exaggerated hurt. It lands as comic heartbreak rather than real sadness, turning a small letdown into a theatrical moment of betrayal and making the listener smile at how dramatically the speaker takes it.