sack dance
n.— «[Mark] Gastineau, an emotional sort, has had his highs and lows. In the exhibition season he believed he finally was accepted by his teammates for his whirling dance. He remarked, after looking at game films with other players, that they seemed to back him in his sack dance.» —“New Jets More Flamboyant” by Gerald Eskenazi New York Times Oct. 3, 1983. (source: Double-Tongued Dictionary)
Further reading
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