Amy: I tried to ask him about it, and he invoked section three, article five of the marriage contract: beeswax, none of your.

Bernadette: Look, I think that's LeBron over there.
Penny: James?
Bernadette: No, LeBron Kershenbaum.

Amy: Hey, did you guys know that Sheldon had a best friend growing up named Tam?
Leonard: Was that the imaginary talking koala?
Amy: No. He's a real person who apparently betrayed him.
Leonard: Yeah, so did the koala.

Howard: Wow. I wonder what that guy could've done to make Sheldon not talk to him for 20 years.
Leonard: I wonder if it'd work a second time.

Penny: Okay, listen, I'm really worried about this whole Raj thing.
Bernadette: I know, he's so desperate to get married, which is weird, because I can't imagine we make it look that great.
Penny: I know, right?

Bernadette: Well, I could ask my dad. Maybe he can get some of his old cop buddies to do a background check on her.
Penny: Would he do that?
Bernadette: Of course. He's a retired cop who plays by his own rules. [on the phone] Hi, Daddy. No, everything's good. I just have a favor to ask. Yeah, so, my friend Raj is marrying this woman that he barely knows, and I wanted to see if you could use your connections to dig up any dirt on her. Uh-huh. Sure. Okay. Love you.
Penny: Is he in?
Bernadette: Absolutely not. He won't do it. It's totally illegal.
Penny: I thought you said he played by his own rules.
Bernadette: He does, but apparently, they're very similar to the actual rules.

Georgie: Yeah, sure, I remember Tam, Sheldon's little Vietnam buddy. The two of them were always running around together.
Leonard: So, what happened?
Georgie: What do you mean?
Leonard: Well, I mean, Sheldon never talks about him. They haven't spoken in years. He wasn't at the wedding.
Georgie: He wasn't? All right, well, this is embarrassing, 'cause I had a long conversation with someone who I thought was Tam.

Raj: Wait, wait, so you don't know what their fight was about?
Georgie: I wish I could help you, boys. But, you know, Sheldon used to keep an enemies list when he was a kid.
Leonard: Oh, he still does.
Georgie: Really? I figured that went the same way as his bathroom schedule.
Howard: If you mean digitized, annotated and put online, it did.
Georgie: Maybe that'll tell you something. Hey, while you're looking at it, if I'm still on there for peeing in his shampoo bottle - Eh, you know what, just leave it.

Howard: All right, got his enemies list. Ooh, he updated the interface. You can search by first name, last name or length of grudge.
Raj: Is Tam on it?
Howard: Let's see. Yep. Right here. Tam Nguyen.
Leonard: Oh, great. What did he do?
Howard: Hold on. I have to agree to the terms of service. No, I'm not a robot. Okay.
"Which of these are plants?" And we're in.

Sheldon: When I moved to California, what did you do?
Tam: I stayed in Texas.
Sheldon: Do you believe this guy?!

Howard: So, he was your best friend growing up?
Tam: Yes.
Howard: Were there no other kids in Texas?

Sheldon: Howard, today is your lucky day. Leonard's out, you're my new best friend. Well, I'm not thrilled about it either, but here we are. Okay, fine. Is Bernadette there? Sh- No? Just Stuart? Let me call you back.

Sheldon: Yes.
Leonard: Uh, I'm Leonard Hofstadter. I called you about the apartment. You said-
Tam: Tell him to go away. You already have a roommate.

Tam: New neighbor?
Penny: Oh, hi.
Tam: Hi.
Sheldon: Hi.
Tam: Hi.
Sheldon: Hi.

Penny: Tam, look. Sheldon's hugging me.
Tam: It's a Saturnalia miracle.