- Clair Huxtable: [after tricking him about his birthday dinner] Cliff, this is it!
- Vanessa Huxtable: We got him!
- Clair Huxtable: We got him good!
- Dr. Heathcliff 'Cliff' Huxtable: I think it's just awful that people would ask you to pitch in and not tell you what it is. And if it was me, I would go upstairs and demand to know what you are getting me for my birthday.
- Theo Huxtable: You know something, Dad? They said you would try that.
- Dr. Heathcliff 'Cliff' Huxtable: The joy of a birthday is finding out what the present is before one gets it.
- Sondra Huxtable: It's basic psychology, Denise. A man reaches Dad's age and looks back and he sees almost half a century gone. And he looks ahead and he realizes that he has less than a third of his life left.
- Dr. Heathcliff 'Cliff' Huxtable: Sondra, I think you ought to get a job writing birthday cards.
- Dr. Heathcliff 'Cliff' Huxtable: Saturday's my birthday. I'll be 48 years old.
- Theo Huxtable: Right, Dad. It's circled on my calendar.
- Dr. Heathcliff 'Cliff' Huxtable: Oh man, thank you.
- Theo Huxtable: You did it.