Howard: No, not like us. Creepy chummy. Like you and your dog.
Raj: She feeds him out of her own mouth?
Howard: I mean he calls her Debbie, she calls him Stewie, and they're all giggly around each other. And believe me when food goes in that mouth it does not come out.

Howard: You know, I'm really glad you decided to learn Mandarin.
Sheldon: Why?
Howard: Once you're fluent, you'll have a billion more people to annoy instead of me.

Howard: I invented a game. Want to play?
Leonard: Sure.
Howard: It's called Emily or Cinnamon. I give you actual quotes I've heard Raj say, and you guess if he was talking to his girlfriend or his dog.

Bernadette: Does your mother call you every day at work to see if you had a healthy lunch?
Howard: My mother calls me every day at work to see if I had a healthy bowel movement.

Dan: You're scared of Bernadette?
Penny: Yeah, kinda.
Dan: I thought it was just me! Everyone thinks she's so nice with the little squeaky voice!

Sheldon: I feel renewed. I'm ready to deal with any changes that come my way. [sees Penny] Your hair is different. You changed your hair. I can't take this. I'm out.

Sheldon: Leonard, as soon as we get home, I want to have coitus with Amy. [checks for Amy's reaction] Okay, she can't hear.