Bernadette: Hang on, you've had her for hours?
Raj: Yes. I picked her up, and then we both went for massages to try and calm down. And then we got Pinkberry.
Bernadette: So you knew she was okay, and you couldn't pick up the phone to tell us?
Raj: Well, I, I thought about-
Bernadette: Don't well me, mister. We've been worried sick. She could have been dead for all we knew. You should be ashamed of yourself.
Raj: Sorry. I, I just-
Bernadette: Sorry's not good enough. Maybe you need to take some time and think about what you've done. (ends the Skype call)
Howard: Nice guilt trip. You are gonna be an amazing mom!

Howard: I'm sorry I didn't take you to the airport. I just want you to know I'll never forgive myself for being so selfish. And I promise to keep you close for the rest of my life.
Bernadette: Oh, no, that thing's gonna end up in my bedroom.

Bernadette: (Shouting from the bathroom) How many times do I have to tell you to replace the toilet paper when it's empty?
Howard: I'm in the middle of something.
Bernadette: So am I!

Bernadette: Gosh, Amy. I'm sensing a little hostility. Is it maybe because like Sheldon's work, your sex life is also theoretical?

Professor Proton: Okay, as, as I put the egg on top, and, and the flame goes out and, and, and the air pressure decreases in, in the flask, what do you think will happen?
Penny: I think I know.
Sheldon: It's gonna get sucked in. It's going to get sucked in.
Penny: Okay, I didn't know.
Sheldon: Yes!
Penny: See, I'm not a scientist like them.
Professor Proton: I, I figured that out.

Professor Proton: I'm having trouble with my pacemaker.
Leonard: I'll call for help.
Penny: Any chance we could plug it into the potato?
Professor Proton: No.

Howard: How'd you get him to come to your house?
Sheldon: As Professor Proton always says, there is no problem you can't solve if you use your noggin.
Leonard: And he wrote him a check.
Sheldon: Yeah, that too. A big check.