Leonard: Maybe I'll move in with Penny, or maybe she and I'll take this place and you can move across the hall.
Sheldon: Move across the hall?! Did you take a marijuana?

Sheldon: I'm writing an appeal to the faculty senate so that I can move on from string theory.
Leonard: How's it going?
Sheldon: You tell me. "Dear esteemed colleagues. As you may know, I have requested to change my field of study. My decision to do so is, I believe, in the best interest of science. At your convenience, I'd be happy to explain it to you in words you'll understand."

Bernadette: Howie, I love you. And as your wife, your mother is every bit as much my problem as she is yours. So, I want a divorce.

Leonard: Seriously? You don't even have a change of clothes or a toothbrush.
Sheldon: My plan is to stop at malls and buy what I need. It's called living off the land.

Bernadette: Little warning before you jump into this marriage business. You're not just marrying him, you're marrying his family.
Penny: I think Leonard's mom's okay with me.
Bernadette: It doesn't matter if she's okay with you. The question is can she go to the bathroom by herself?

Leonard: It's dark out and he's alone. I don't like it. Let's go get him.
Penny: It's sweet how you look out for him. You're a good guy.
Leonard: It's not just that. My mother would kill me if I let something happen to him.

Raj: Boy, I'm so hungry today. I wonder why.
Howard: Because you had sex the other night?
Raj: You know what, that might be it. By the way, it isn't like riding a bike. I fell off a few times.

Leonard: I'm your son. What about the fact that she's good enough for me?
Beverly Hofstadter: *blank shrug* Sure.

Beverly Hofstadter: Hello, Leonard.
Leonard: Hi, mom. I have some exciting news.
Beverly Hofstadter: I'm listening.
Leonard: Before I tell you, will you promise to try and be happy for me and keep any concerns you have to yourself?
Beverly Hofstadter: No.

Leonard: So, should we talk about setting a date?
Penny: Well, I'd like to choose one that works with my brother's schedule.
Leonard: Right and when would that be?
Penny: Twelve to eighteen months from now, depending on good behavior.

Penny: He'll be okay. You taught him well, Padawan.
Sheldon: Good Lord. Padawan is the student, not the teacher.
Penny: Seriously, let him go.

Bernadette: I don't think the service is going to send any more people.
Howard: Yeah, maybe it's time we just release Ma back into the sea.

Sheldon: It's an outrage. Honestly, I am tempted to leave the university.
Howard: You know, if you're really serious about that I hear there are some exciting opportunities in home care for the old and fat.

Bernadette: Sorry, I'm late. The leaf blower broke so I had to hand dry my mother-in-law.

Stuart: I don't mean to be rude, Sheldon, but my life is kinda falling apart right now.