Raj: Wait, wait, wait. If Tam knows what he did, we can just ask him. He's gonna be on campus tomorrow showing his son around.
Leonard: Won't that make Sheldon mad?
Raj: Everything makes Sheldon mad.
Howard: Yeah. Look at his list. Jim Henson for, quote, "putting a terrifying, giant yellow bird on television and in my nightmares."

Penny: Never? Isn't that usually when you go to the gym?

Amy: This one is from Leonard and Penny. Aw. "The perfect gift for the perfect couple."
Sheldon: Save that card. We may need to throw it back in their faces.

Sheldon: Leonard, when are you leaving to pick your mother up from the airport?
Leonard: Uh, well, let's see, her plane gets in at 3:00, figure half hour to get her luggage, so never.

Amy: Sheldon, that's not how you write a thank you card.
Sheldon: What's wrong with it?
Amy: "Dear Aunt Helen, thank you so much for the lovely place setting. If my handwriting looks strained, that is because this is the 16th thank you card Amy has forced me to write. The muscles in my wrist are cramping as I struggle to finish this sentence. Ow, ow, oh, the pain. Love, Sheldon."
Sheldon: Fine. "And Amy." Ow.

Anu: I think I'm nice. Are you nice?
Raj: Oh, I'm definitely nice. Every time a girl breaks up with me she always starts with, "You're a nice guy."

Penny: Well, people came, they ate, they vowed to never speak to each other again. I think it was a successful party.

Sheldon: I think Howard hurting my feelings has in some ways made me a better person.
Amy: Hmm. Look at you, improving on perfection. How so?
Sheldon: As you were eating that Danish, I wanted to point out that the Danish isn't Danish at all. It was imported by Austrian bakers during a labor dispute in the 1800s. But I chose not to, because I didn't want to be the kind of fella who foists unwanted facts about European pastries on the unwilling.
Amy: Huh. That's actually interesting.
Sheldon: Sorry. Now you'll never know.

Sheldon: Look, it doesn't have to just be New York. That's the beauty of it. Uh, the initials "N.Y." can stand for anything you like. For instance, I understand that there is an elderly rock-and-roll musician named Neil Young. Perhaps you heart him. Or if not him, Egyptian table tennis silver medalist Noha Yossry. Or Nana Yamaguchi, the Japanese voice actress who starred in Sally the Witch.
Raj: Did you just Google the initials "N.Y."?
Sheldon: I had Wi-Fi and a long plane flight. Draw your own conclusions.

Sheldon: I don't understand. If it's unreasonable, why should we do it?
Howard: Okay, how about this? You know in Star Wars when R2 and Chewbacca were playing holochess?
Amy: Really? Star Wars?
Sheldon: Amy, let the man speak.

Amy: So, we got everybody gifts.
Penny: Aw.
Leonard: Did you forget about us until you were at the airport?
Sheldon: No. We forgot about you until we were on the plane. Luckily, there was Wi-Fi, and I have Amazon Prime.

Sheldon: Hello, Bernadette.
Bernadette: Wait, did you just walk into my house?
Sheldon: No, Howard let me in.
Bernadette: Where is he?
Sheldon: Oh, he got in his car and drove away.

Penny: It's fine, I'll sit on the floor.
Raj: Thank you, Penny. And, Leonard, I was kind of hoping I could sit next to Anu.
Leonard: So now I have to sit on the floor? It's my house. Why can't Sheldon sit on the floor?
Sheldon: That might be the dumbest thing you've ever said.

Barry Kripke: Greg Pemberton, you old so-and-so.
Dr. Pemberton: Very good to see you. Uh, let me introduce you to my colleague, Dr. Campbell. Uh, Kevin, this is Barry Kripke. We went to college together.
Dr. Campbell: Great to meet you.
Barry Kripke: Well, you have my number. We should hit up the buffet at the strip club while you're in town. Nothing beats a lap dance and a baked potato bar, huh?

Bernadette: And my dad has grown to really like Howard.
Howard: Yeah, there's a nice coolness between us.