Juba all aroun' de town.
Juba dance, Juba sing,
Juba cut de pigeon wing.
("Master Juba", the stage name of William Henry Lane, a free black from Rhode Island, was the inventor of "pattin' Juba," the predecessor of tap dancing.)
Juba was the name of a man who led the Numidians against the Romans. He had some initial success, and then the Romans sent down Marius and Sulla to deal with him.
Let me express what happened then with a demonstration of what happens when you put an egg on the pavement, and have an elephant step on it.
Scrunch.
http://www.aztlan.net/juba.htm
("Master Juba", the stage name of William Henry Lane, a free black from Rhode Island, was the inventor of "pattin' Juba," the predecessor of tap dancing.)