Se você gostaria de cair na toca do coelho que é o TVTropes, eu poderia sugerir-lhe um exemplo: Detector de mentiras vivo
A character with the ability to always know when someone is lying.
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When Larry suspects someone of lying, he will stare at them suspiciously for several seconds, trying to detect if they're lying or not. The same leitmotif ("The Puzzle") always plays on the soundtrack. The audience is left to draw their own conclusion about how effective his method is.