Big Bang Theory Quote
Penny: I just remembered where the emergency key is.
Sheldon: Where?
Penny: In your apartment.
Sheldon: What's it doing in my apartment?
Penny: I went in there a few weeks ago, and you guys weren't home and I forgot it there.
Sheldon: You went in my...? Why would...? What are you saying?
Penny: It's not a big deal. I was making coffee and I ran out of milk.
Sheldon: You're the milk thief! Leonard said I was crazy, but I knew that carton felt lighter.
Quote from S02E21 - The Vegas Renormalization