Penny: I don't see the big deal if my brother comes and stays for a while.
Leonard: If you get him a job, he's gonna live here forever!
Penny: He would get his own place.
Leonard: Has he ever had his own place?
Penny: Yes!
Leonard: Did it have a metal toilet next to the bed?
Penny: It still counts.

Leonard: I'm not saying you have to ask my permission, but you could have talked to me about it before you said it was okay.
Penny: Like you talked to me about your gaming room?
Leonard: Our gaming room! I was gonna put a scented candle in it.

Amy: What's that? Are you working on your resume?
Penny: No, it's my brother's. I'm trying to help him get a job out here.
Sheldon: Oh, ooh! And that makes Leonard angry.
Leonard: No, it doesn't.
Sheldon: What? Leonard, please. I know an angry face when I see it. It's this red frowny guy on my phone.

Sheldon: Hey, Leonard, if you're happy and you know it, no need to clap your hands, because I have an emotion detector.

Bernadette: You're not gonna get information, you're just gonna get criticism that hurts your feelings.
Raj: Don't worry, I'm a grown man. I have a thick skin.
Howard: (chuckles) You're so stupid.
Raj: Hey!

Bernadette: Is that Emily your ex-girlfriend?
Raj: Yeah. I'm getting all my exes together in order to discuss why they broke up with me and how I can be a better boyfriend.
Howard: Oh, God. You went through with that? What is wrong with you?
Raj: We are going to find out.

Amy: What does it say I'm feeling?
Sheldon: Sad.
Amy: Yes. I'm looking at a picture of my grandma.
Sheldon: Oh, that makes sense, 'cause she's gone and you miss her.
Amy: Yes.
Sheldon: And you're worried that turkey neck is in your future. What, now, see, now it says you're mad. Make up your mind.

Amy: Okay, I'm looking at the first picture.
Sheldon: You are happy?
Amy: Yes. I'm looking at puppies.
Sheldon: Aw. Somebody's ignoring their tiny needle teeth, but all right.

Amy: Now, I'm gonna look at some pictures to prompt an emotional response, and we'll see if the machine can identify them accurately.
Howard: Okay, remember, it can only detect happy, sad, angry and excited. Not other things you're feeling, like, "What have I done with my life?"

Raj: Now that Sheldon's across the hall, have you decided what you're doing with his old room?
Leonard: I was thinking maybe a library or a gaming room.
Sheldon: You could make it a train room.
Leonard: I don't like trains. You like trains.
Sheldon: I know, and Amy says I can't have a train room.

Leonard: Hey, great news. The TV I want will fit in the gaming room, and if I leave the curtains open, I can watch it from work.

Sheldon: Wonderful. Although I'm not sure how I feel about being used as a guinea pig.
Leonard: Well, when you get the machine, you can find out.

Sheldon: A machine that reads emotions is intriguing. It could help me be a more considerate friend.
Bernadette: Wouldn't that be nice.
Sheldon: It could also help me identify my enemies, discover their fears and then I could use those fears to destroy them.
Bernadette: I like the first one.

Bernadette: It's supposed to be accurate, like, 85% of the time.
Penny: Wow, I find that hard to believe.
Leonard: That a bunch of awkward scientists with no social skills would invent a machine to do it for them?
Penny: I take it back. I believe it.

Bernadette: You know, I just read that a team at MIT developed a device that helps people read human emotions.
Leonard: And you think we can get those guys to reprogram Sheldon? Cool.