The absent third child, Henry, is hinted at multiple times. Both Grandpa and Sean mention Henry: Grandpa during the introductions to his new girlfriend ("Henry's here, somewhere") and Sean mentions him when telling the story about Sister Helen. A very young Jake Burbage is seen in the last few seconds during the "Thank You" segment from the producers for five years of "Grounded for Life", during the last final credits.
The episode title is a reference to "Hello, Goodbye", released in 1967 by The Beatles.