The Big Bang Theory

The Big Bang Theory Pop Quiz

According to Sheldon, which is the Secret Knock in the episode "The Peanut Reaction" (S1 E16)?
Choose the right answer:
Option A Knock knock - knock - knock knock
Option B Knock - knock knock - knock knock
Option C Knock knock - knock knock - knock
Option D Knock knock - knock knock knock
 Lady_Togo posted over a year ago
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