S4E27: The Griffin Family History
And the noblest of all those early creatures was the dinosaur.
Hey, Lois. I'm gonna go nail a couple of dinosaurs in the next valley.
Peter, that's terrible.
Hey, I don't know any better.
I'm a dinosaur. I don't have morals.
Hey, a herpesaur.
Hey, Peter, does your tail itch?
PETER: After that, a meteor hit the earth,
turning it into a block of ice for some reason.