Place it right after the failed joke lands in your edit, then follow it with a Dun Dun Dun beat to underline the awkward moment before moving on, and finish with a SpongeBob Fail sting when the moment collapses completely.
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This 12-second clip captures Therman, played by Zach Galifianakis, breaking into a long, breathy wheezing laugh that keeps catching in his throat. It feels awkward and contagious at once, the kind of laugh that makes a bad joke funnier because he cannot stop. The moment comes from the film Dinner for Schmucks, where Therman's laugh is one of his most recognisable traits.