Sheldon: You know I can't keep a secret!
Leonard: You can if you try. Think about it this way: if I were Batman and you were Alfred, you'd keep that secret, right?
Sheldon: Why do you get to be Batman?
Leonard: Because the Batman has the secret.
Sheldon: Alfred has secrets, too!
Leonard: Like what?
Sheldon: Alfred knows that Barbara Gordon is Batgirl. Which I've now just told to Batman! See, I cannot keep a secret!
  
  Leonard: You can if you try. Think about it this way: if I were Batman and you were Alfred, you'd keep that secret, right?
Sheldon: Why do you get to be Batman?
Leonard: Because the Batman has the secret.
Sheldon: Alfred has secrets, too!
Leonard: Like what?
Sheldon: Alfred knows that Barbara Gordon is Batgirl. Which I've now just told to Batman! See, I cannot keep a secret!
 Sheldon : You know I can't keep a secret! 
 Leonard : You can if you try. Think about it this way: if I were Batman and you were Alfred, you'd keep that secret, right? 
 Sheldon : Why do you get to be Batman? 
 Leonard : Because the Batman has the secret. 
 Sheldon : Alfred has secrets, too! 
 Leonard : Like what? 
 Sheldon : Alfred knows that Barbara Gordon is Batgirl. Which I've now just told to Batman! See, I cannot keep a secret! 
  http://www.tv-quotes.com/shows/the-big-bang-theory/quote_20951.html
  

