Klipspringer, according to Nick, is a Gatsby party guest who spends so much time in Gatsby's mansion that Nick believes he has no other home. He is nicknamed "the boarder." The idea of Klipspringer's homelessness is reinforced when Nick sees him, the morning Gatsby is scheduled to meet Daisy, wandering on the beach "hungrily."
On this monumental day, as Gatsby is showing Daisy his mansion, he, Daisy, and Nick run into Klipspringer. Showing a Tom-like side that Nick doesn't like to acknowledge, Gatsby commands his hanger-on to play the piano and sing for his supper, so to speak. He plays, notably, "The Love Nest," and we hear him sing the following lyrics:
ONE THING’S SURE AND NOTHING’S SURER
THE RICH GET RICHER AND THE POOR GET—CHILDREN
It is possible to go to Youtube and listen to this popular 1920s song. It is an interesting intrusion of a social justice theme—a reminder of the poor, like Klipsinger—into a magical moment. Reality exists even at the center of the dream, and it will intrude again as the novel unfolds.