Who's on First?
History
Bud Abbott stated that it was taken from an older routine called "Who's The Boss?", a performance of which can be heard in an episode of the radio comedy program It Pays to Be Ignorant from the 1940s. After they formally teamed up in burlesque in 1936, he and Costello continued to hone the sketch. It was a big hit in the fall of 1937, when they performed the routine in a touring vaudeville revue called Hollywood Bandwagon.
Who's on First?-3