"During the 'Gay Nineties' period, George M. coined [this as] his famous curtain speech..." --
"Obituary: George M. Cohan, 64, Dies at Home Here". The New York Times. New York. November 6, 1942. Retrieved December 29, 2018.
Originally a quote by Muhammad Ali, who repeatedly "yelled that sentence". YouTube. August 20, 2013. Archived from the original on February 21, 2015. Soon after winning his first bout against Sonny Liston in 1964.
Originally a quote by Muhammad Ali, who repeatedly "yelled that sentence". YouTube. August 20, 2013. Archived from the original on February 21, 2015. Soon after winning his first bout against Sonny Liston in 1964.