Leonard: Why isn't this bothering you? Isn't your brain getting itchy? This is on your card. This could be ruining your credit score. Why isn't this making you crazy?
Sheldon: I have something to tell you, but I want you to promise not to flip out.
Sheldon: Seven years ago I found out the DVD was late and I paid for it.
Sheldon: I was going to mention it at the time, but then I thought someday this might be a teachable moment.
Leonard : Ahhh! I...You...Ah...WHAT??
Amy: Sheldon, that was diabolical.
Sheldon: I know. And it wasn't easy. Do you have any idea what it's like to wait for years and never know if your going to finally get satisfaction?