Penny: What are you lunatics doing?!
Amy: Sheldon had a breakthrough.
Sheldon: Actually, Amy and I had a breakthrough.
Penny: Oh, science? Shocking!
Leonard: You don't understand. This could be really big.
Sheldon: No, Penny's right. We have our whole lives to do science together.
Amy: Let's get married.
Penny: All right. It's go time! I am pumped!