O. K. Sato (March 13, 1871 - March 23, 1921) was an American vaudeville performer who flourished in the late nineteenth and early twentieth centuries, his act was notable for its juggling of the comedic style and may be described as helping define the so-called "tramp" juggling style epitomized by which American comedian, actor, juggler and writer, his comic persona was a misanthropic and hard-drinking egotist, who remained a sympathetic character, born as William Claude Dukenfield ?