Quote from Sophia in Mary Has a Little Lamb
Dorothy: Ma, look who's here.
Sophia: Oh! So, Mary, when's the baby due?
Dorothy: Ma, you're talking to a 16-year-old girl.
Sophia: A knocked-up sixteen-year-old girl. [Mary nods]
Dorothy: Ma, how did you know?
Sophia: Because you had the same look of panic on your face when you got pregnant. Kind of like a deer caught in the headlights of a car. I thought only pregnant teenagers had that expression, until I saw Dan Quayle on TV.