Big Bang Theory Quote
Sheldon: (knock, knock, knock) Penny
Penny: (knock, knock, knock) Sheldon
(Sheldon is startled)
Sheldon: (knock, knock, knock) Penny
Penny: (knock, knock, knock) Sheldon
Sheldon: (knock, knock, knock) Penny
Penny: (knock, knock, knock) Sheldon
Sheldon: (knock, knock, knock) Penny
Penny: (knock, knock, knock) Sheldon
Sheldon: (knock, knock, knock) Penny
Penny: (knock, knock, knock) Sheldon
Sheldon: (knock, knock, knock) Penny!
Penny: What do you want?
Quote from S02E23 - The Monopolar Expedition