Leonard: Oh, uh, how about a sensory deprivation tank?
Amy: Oh, that's interesting. It's supposed to be very calming. Floating in a warm pool of liquid in a dark, soundless space.
Sheldon: Oh, I don't know how I feel about being deprived of all my senses.
Leonard: What are you talking about? All you ever do is complain about how things smell, feel and sound.
Sheldon: Oh, I'm right here. Why are you shouting?