Add stock and bring to boil. Add escarole, reduce heat, cover, and simmer for 10 minutes. Add meatballs and simmer another 5 minutes. Meanwhile, combine remaining 2 eggs and remaining cheeses in small bowl and stir with a fork to blend gently. Slow pour egg mixture into hot soup, stirring constantly.
Seth MacFarlane voices four of the show's main characters: Peter Griffin, Brian Griffin, Stewie Griffin and Glenn Quagmire. MacFarlane chose to voice these characters himself, believing it would be easier to portray the voices he had already envisioned than for someone else to attempt it.
Whether or not people can understand Stewie is a running gag in the show. Obviously Brian can understand him, Bertram, Stewie's brother can....and for most of the show's run the family doesn't really respond to Stewie. Seth MacFarlane once said that he is like most other babies in the world.