Big Bang Theory Quote 5794
Leonard: Since when do you hum songs?
Sheldon: What are you talking about?
Leonard: You were just humming.
Sheldon: Are you sure? Sometimes when my brain really gets moving, it makes noise.
Leonard: How does your brain feel about calculating the surface tension of the domain walls?
Sheldon: Let's see. (starts humming) Hey! I was humming. One point for Hufflepuff.