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Place it at the end of a joke or a funny fail, after the setup has landed, then follow it with Nelson's Ha-Ha! for a second wave of laughter or cut to Laughing Dog Meme when the joke is about an animal. Keep it as the payoff, not the opener, so the reaction comes after the humour.
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This five-second clip is Lulu laughing in Portuguese, a bright, rolling burst of laughter with no words, just the sound of someone genuinely amused. It feels warm, playful and contagious, the kind of laugh that makes a joke feel funnier the second time you hear it, and it works best as a quick burst of shared joy.
