In chapter four, Nick travels into New York City with Jay Gatsby, where the two neighbors have lunch with Gatsby's suspicious business partner, Meyer Wolfsheim. When Nick is initially introduced to Wolfsheim, Wolfsheim ignores him and continues to carry on a rather serious conversation with Gatsby. After Meyer Wolfsheim comments on the brutal murder of his friend, Rosy Rosenthal, at the old Metropole, he turns to Nick and says,
I understand you’re looking for a business gonnegtion. (Fitzgerald, 76)
Meyer's comment to Nick is presumably a business proposition to work for him in some particular area of the criminal underground. Essentially, Meyer Wolfsheim believes that Nick is looking for a job and is willing to work for him. Before Mr. Wolfsheim can elaborate further on the business opportunity, Gatsby intervenes and mentions that Nick is not the man Meyer assumes he is but is simply a friend. As the lunch continues, Nick learns that Wolfsheim is a prominent gambler who fixed the 1919 World Series and successfully avoided the law. Nick's introduction to the shady Meyer Wolfsheim reveals that Jay Gatsby is somehow connected to the criminal underground, which gives credence to the rumors that he is involved in the illegal bootlegging industry.