Leonard: Oh, we have to use the stairs.
Alfred Hofstadter: When are they gonna fix your elevator?
Leonard: Uh, I don't- Any day now.
Alfred Hofstadter: Well, the stairs are fine. Besides, your mother is up there. Maybe I'll have a heart attack and not have to see her.

Leonard: Penny's really looking forward to seeing you.
Alfred Hofstadter: Ah, she's a sweetie. You got a good one there, Leonard.
Leonard: Thanks, Dad.
Alfred Hofstadter: How the hell did you do that?

Leonard: Hey, I, I know things are a little rough with you and Mom, but I'm really glad you're here.
Alfred Hofstadter: Me, too. I should have never had that angioplasty because I feel fine.

Leonard: And, of course, Mom.
Alfred Hofstadter: Hello, my hateful shrew.
Beverly Hofstadter: Hello to you, you wrinkled old bastard.
Sheldon: All right, now I'm starting to sense a little tension.

Bernadette: Come on, Howard, you're overreacting.
Howard: Am I? Am I? What do you want to bet some black ops guy is reprinting my high school yearbook and I'm no longer in it? That chess club picture is now just David Zimmerman and Elaine Cho.

Howard: I'm sorry, you find this funny?
Raj: No, I was just thinking about Jurassic World. Boy, that was terrible.

Howard: I can't believe I was so naive. The military is just gonna take over the whole project. And you know what happens if we object? We disappear. Like off the map. Like every American Idol winner since season four.

Penny: Whew, chilly.
Amy: I think I can see my breath.
Beverly Hofstadter: We can hear you.
Penny: Sorry.
Amy: Sorry.

Raj: Okay, look, I'm on the Air Force Web site, and the department that e-mailed you is in charge of acquisitions. So maybe they just want to give you a lot of money for your invention.
Howard: Oh, please, that's not how it works. You saw E.T., Avatar, Jurassic World. The military just shows up and takes over.
Bernadette: You do realize those weren't documentaries, right?

Mary Cooper: I've always had a special place in my heart for Leonard. Taking care of my baby all these years.
Sheldon: Excuse me, I take care of him.
Mary Cooper: Sure you do.

Mary Cooper: So who else is coming to this shindig?
Amy: Oh, well, the usual gang. Penny's family is coming tomorrow.
Sheldon: Yeah, and Leonards mother's already here.
Mary Cooper: Oh. Beverly. How nice.
Amy: You've met her, right?
Mary Cooper: Yes, I have. (reveals her cross necklace)
Sheldon: Mother, she's an atheist, not a vampire.
Mary Cooper: Either way, let's stop and get some garlic.

Mary Cooper: Thank you for picking me up.
Sheldon: Oh, you're welcome.
Mary Cooper: I was speaking to your young lady.
Amy: My pleasure, Mrs. Cooper.
Mary Cooper: Oh, please call me Mary.
Amy: Okay, Mary.
Sheldon: You know, that doesn't work for me, let's stay with Mrs. Cooper.
Mary Cooper: Sheldon, don't be silly.
Sheldon: Wh-, what? That's what I called you 'til I got to know you better.

Mary Cooper: It was so nice of Leonard and Penny to invite me.
Sheldon: Well, actually, I-
Amy: It sure was.

Sheldon: Hey, good news, I just got off the phone with my mother. She is coming to the wedding.
Penny: Okay, wait, you're inviting people to our wedding?
Sheldon: Yes, I'm inviting people to our wedding. Yeah, I've already asked Stephen Hawking and Robert Downey Jr, and, now don't get your hopes up, 'cause he's pretty busy, but Erno Rubik.
Bernadette: Who's Erno Rubik?
Sheldon: Seriously? He invented the Rubik's Cube.
Penny: Okay, fine, but why would you invite him to our wedding?
Sheldon: Because, despite his fame and fortune, he strikes me as a lonely man.

Penny: Okay, so it's not a legal ceremony, it's just a chance for us to redo our vows so everyone can be part of it.
Amy: So there's no maid of honour?
Penny: No.
Amy: Huh. But if I were to, say, wear a purple satin dress with a sweetheart neckline and stand near you, you wouldn't be able to stop me, right?
Penny: I don't see how I could.
Amy: Then I graciously accept.