Howard: So the key is, the moment one ball is at the top of its arc, you toss the next one.
Sheldon: Okay, I think I got that.
Howard: Uh, h-hold on. There's an old saying in juggling.
Bernadette: Is it "I'm going to die alone"?
Howard: No, it's "if you want to have fun, start with one." Yours we think, but we do not say.

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.

Bernadette: Maybe we should get one of those machines to help her up the stairs.
Howard: You mean a forklift?

Sheldon: Sheldon Cooper does not cry.
Howard: That's true, you'd rust.

Sheldon: Physicist, baker, lover, what can't I do?

Penny: I didn't know you could drink while you were breastfeeding.
Bernadette: Yeah, they say the yeast in beer helps with milk production.
Amy: I'm pretty sure that's a myth. Let me check.
Bernadette: Ruin it for me, and I'll break this glass over your head.

Penny: You want food?
Bernadette: Yeah, breastfeeding burns, like, 5,000 calories a day. (To Amy) Do not touch that phone!