Origin: American revolutionary
war.
After: Jean-Baptiste Donatien
de Vimeur,
comte de Rochambeau (1725-1807).
As a lieutenant general, comte de Rochambeau commanded the French expeditionary
army sent to help the American Revolution during 1780 to 1782. His skillful leadership and professional wisdom were vital to the American-French allied victory at Yorktown in September 1781.
Rochambeau was so skilled at kicking the
British's balls in battle, that his victories were called "Rochambeau's".
His name, in corrupted spelling, became
slang for any number of contests or confrontation resolved by competitive nut-kicking.
Hey! I'll roshambo (Rochambeau) you for the last
beer!
( etiquette usually dictates that the challenged gets
first kick .. unless he's an idiot).