James Brown's performances were legendary, and the man could dance. The Popcorn was the name of one of his dances, and he capitalized on it by creating songs he could do the dance to. Besides this track, Brown also recorded "The Popcorn," "Low Down Popcorn," and "Let a Man Come in and Do the Popcorn." Brown also created a song around a dance craze with "Mashed Potatoes." (thanks, Bertrand - Paris, France)
Brown was a huge influence on Prince, and in Prince's song "Gett Off," he mentions Brown and sings some lyrics taken from this song: "I like 'em fat, I like 'em proud, you gotta have a mother for me."