Louis Francis Cristillo (March 6, 1906 – March 3, 1959), known by the stage name Lou Costello, was an American actor and comedian best remembered for the comedy double act of Abbott and Costello, with Bud Abbott. Costello played a chubby, bumbling character. He was known for the catchphrases "Heeeeyyy, Abbott!" and "I'm a baaaaad boy!"
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Louis Francis Cristillo (March 6, 1906 – March 3, 1959), known by the stage name Lou Costello, was an American actor and comedian best remembered for the comedy double act of Abbott and Costello, with Bud Abbott. Costello played a chubby, bumbling character. He was known for the catchphrases "Heeeeyyy, Abbott!" and "I'm a baaaaad boy!"