It's 1973. Calliope is home from boarding school and Chapter Eleven is home from college.
Chapter Eleven confesses to Calliope that he dropped acid before playing Ping-Pong with their dad. (The Olympic Committee frowns on this.)
He's kind of a hippie now, and so is his girlfriend, Meg. Calliope listens to Meg talk to him as they have sex: "Your dad's an exploiter, man! Forget 'em. They're dead, man. Dead. This is what's real. Right here. Come and get it, baby!" (3.6.119). How's that for pillow talk?