Big Bang Theory Quote
Penny: Sheldon, come in.
Sheldon: Thank you. I'd like to make a sandwich, but I'm out of bread.
Penny: There's some in the fridge.
Sheldon: You shouldn't keep your bread in the refrigerator. Staleness is caused by crystallization of the starch molecules, which occurs faster at cool temperatures.
Penny: On Earth, we say thank you.
Quote from S03E06 - The Cornhusker Vortex