Lame duck (tango)
Encyclopedia
The lame duck is a dance move
Dance move
Dance moves or dance steps are the building blocks of many dances.More complex dance moves are called dance patterns, dance figures or dance variations....

 in tango
Tango (dance)
Tango dance originated in the area of the Rio de la Plata , and spread to the rest of the world soon after....

.

The dancers slightly separate, clasp hands, and face forward. The man steps forward with his right foot and the lady with her left, dipping with their right knee as they take the next step. The steps are repeated.
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