If You Knew Susie

"If You Knew Susie" is the title of a popular song from the 1920s written by Buddy DeSylva and Joseph Meyer. In the largely comic song, a man sings that he knows a certain woman named Susie to be much wilder and more passionate than most people realize.

The song, which was originally written for Al Jolson became banjo-eyed Eddie Cantor's best-known success of the 1920s, recorded on April 6, 1925 and the bestseller for five weeks during the year.

...
Wikipedia