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.

Stuart: Yeah, this one made me go for ice cream and talk about her day. Spoiler alert: it was fine.
Amy: It wasn't fine. I got trapped in an elevator.
Sheldon: I may have missed a few details. The bottom of my cone was drippy.

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.

Amy: Guys, come on, I think I'm in trouble.
Howard: It's no big deal. I used to get called into H.R. all the time. Ms. Davis is great. Pro tip: if you find strong women sexy, do not say it out loud.

Amy: What's wrong?
Sheldon: Why do you assume something's wrong?
Amy: Because you haven't touched your dinner, and you're literally ticking like a bomb about to go off.
Sheldon: Oh, Amy. You see through me like one of Penny's shirts.

Leonard: You pick up your dresses?
Amy: Yep. The tailor had to take mine in and let Penny's out. Best day of my life.
Sheldon: What about the day you met me?
Amy: I stand by my statement.

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.

Leonard: What is up with you two?
Stuart: Well, it's kind of hard to explain. Uh, you know when things are going great, but you worry that any minute you might screw everything up?
Penny: No.
Leonard: Yes. If you really like her, you can't let fear get in the way. You have to move forward.
Stuart: And at a certain point, the fear of losing her goes away?
Leonard: I will let you know.

Mrs. Fowler: I can't believe it. All this time I've been angry at you when I should have been angry at Amy.
Sheldon: Look at that. We're both angry at Amy. Maybe that's something we could bond over. Let me ask you this: how do you feel about Howard?
Mrs. Fowler: Oh, is he that odd little friend you have with the haircut?
Sheldon: I may have married the wrong Fowler.

Denise: Okay, so walk up to that chest and push X. X. Push X.
Bernadette: Which one's X?
Denise: The one with the X on it.
Bernadette: Take it easy, I'm new at this.
Denise: What, the alphabet?

President Siebert: Dr. Cooper, there you are. I just wanted to tell you not to worry about this Pemberton and Campbell publicity blitz.
Sheldon: Are you worried?
President Siebert: Not at all. Not even a little bit. [manic laugh]

Sheldon: What? No knock? What's the fracas?