Leonard: God, Sheldon. What the hell are you doing out there?
Sheldon: I heard a noise.
Leonard: It was us. We knocked over a lamp.
Sheldon: Why would you knock over a lamp?
Leonard: We were going to have...
Penny: He doesn't need to know what we were doing, Leonard.
Sheldon: Oh! No, she's right, I don't need to know what you were doing. Carry on.