From Wikipedia, the free encyclopedia Gerardo Luigi "Jerry" Colonna (September 17, 1904 – November 22, 1986) was an American musician, actor, comedian, singer, songwriter and trombonist best remembered as the zaniest of Bob Hope's sidekicks in Hope's popular radio shows and films of the 1940s and 1950s. With his pop-eyed facial expressions and walrus-sized handlebar moustache, Colonna was known for singing loudly "in a comic caterwaul," according to Raised on Radio author Gerald Nachman, and for his catchphrase, "Who's Yehudi?", uttered after many an old joke, although it usually had nothing to do with the joke. The line was believed to be named for violin virtuoso Yehudi Menuhin, and the search for Yehudi became a running gag on the Hope show. Colonna featured in three of the popular Hope-Crosby Road films: Road to Singapore (1940) a...