"Ray was you; you were Ray; who was Matt? The walrus? The egg man? Koo koo kajoo?" Billy is quoting the Beatles' song "I Am the Walrus."
The episode's title, "I've Gotta Be Me," references a song (originally titled "I've Got to Be Me") written for the Broadway musical "The Golden Rainbow" in 1967, and re-recorded in 1968 by Sammy Davis, Jr.