The Golden Girls, Season 5

Sophia:
[to Mary] So when's the baby due?

Dorothy:
Ma! You're talking to a sixteen-year-old girl!

Sophia:
A knocked-up sixteen-year-old girl.

[Everyone looks at Mary, who nods slightly.]

Dorothy:
Ma, how did you know that?

Sophia:
She had the same look of panic on her face that you had when you were pregnant. Sort of like a deer caught in the headlights. I only thought pregnant sixteen-year-old girls had that look until I saw Dan Quayle on TV.