"A catch phrase is a phrase or expression that becomes spontaneously popularized through widespread repeated usage. A catch phrase's defining features are its sudden, spontaneous, and widespread public reception, and its adopted use by the public, often to its amusement."
But all of these vastly pale in comparison to the round of "Catch Phrase" that went on last night at the Clark's house. 3 hours of insane, zany, hilariously funny mental strings trying to be "knotted" into some cohesive form of English. Too fun!