It is revealed in this episode that Corrine in younger than Eunice.
Mary: What do you want for breakfast?
Alien Burt: You (kisses Mary passionately)
Saul: You think I'm crazy.
Burt: No! You're perfectly sane. A 4000-year-old man who knew Moses.
Saul: I didn't know Moses. My wife was two years behind him in school.
Mary: Burt was always a nice lover. Pleasant. Reliable. Sort of like Old Faithful in Yellowstone National Park. You know when it's gonna be. You know what it's gonna be. You know how long it's gonna be. And sometimes you wonder what the big attraction is.
Saul: I am 4064 years old. What do you think I owe it to, a terrific moisturizer?