The conga was a group dance in which participants would form a line, putting their hands on the waist of the person in front, and walk while kicking their legs into the air. It was often accompanied by singing.
In 2009, Donna Noble started a conga aboard a Terpsivore ship in order to communicate with its living dancefloor by replicating the centipede-like shape of a Terpsivore. (COMIC: Death Disco)