Amy Farrah Fowler: I need to tell you something about Howard, but you can't tell him that I told you.

Rajesh Koothrappali: Nope. Don't want to hear it. Do not like to engage in gossip.

Amy Farrah Fowler: Okay. I respect your integrity.

Rajesh Koothrappali: Is it about his special underwear? Because I already know. And that's all I'll say. Fine, it has a charcoal filter in it.