Square dance
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A traditional American folk dance involving four couples arranged in a square formation, with a caller directing the movements. Frasier teases Niles about his new gun enthusiast friends, and Niles quips that America was built by gun-toting square dancers.
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Mentioned once in Analyzed Kiss.
Analyzed Kiss
Season 10 · Episode 23 · S10E23
“A gun show? What's next, square dancing?”