When Michael and Fredo are having their little tete-a-tete in Havana, Michael says to Fredo,"Senator Geary is flying in from Washington tomorrow night with some people -- some government people. I want you to show them a good time in Havana." Fredo seems to smirk, resignedly, and says, "My specialty, right?" as if that's all Michael ever expected of him. It adds to the force of Fredo's outburst in the boathouse later, when he shouts, "Send Fredo to do this, send Fredo to do that...send Fredo to run some Mickey Mouse nightclub somewhere."