Penny: Howard, cow tipping - real or not?
Howard: I'm going to say not. That's just based on me trying to roll my mom over when she's snoring.

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.

Mike: I know I'm hard on you, but you're not the worst son-in-law in the world.
Howard: Mike, that's the nicest thing you've ever said to me.
Mike: Well, I'm drunk.

Raj: It wouldn't be Thanksgiving without an Indian providing the food.

Zack: I just think splitting up can be rough on kids.
Penny: We don't have any kids.
Zack: Are you sure? 'cause you didn't know we were married until this morning.