Stuart: I don't want to rush you, but I'm closing a little early tonight.
Raj: Ooh, hot date?
Stuart: Uh, no. I overheard Bernadette tell Howard she was making him a meatloaf, and you don't have to not ask me twice.

Sheldon: But I have been getting better with sarcasm, if you want to give that a try.
Amy: *sarcastic* Oh, sure, I'd love to.
Sheldon: Whenever you're ready.

Amy: Sheldon, do you understand the irony of your fixation on a man with super speed, while after five years all I can get out of you is a distracted make-out session on a couch?
Sheldon: Irony's not really my strong suit.

Amy: I didn't kill anything. You did, talking about your stupid TV show.
Sheldon: Excuse me. Starting to watch a television show that might run for years isn't a decision to take lightly. I'm wrestling with a big commitment issue here.
Amy: Really? That's the commitment issue you're wrestling with?

Sheldon: Anyway...
*leans in to kiss Amy, but gets pushed away*
Amy: What are you doing?
Sheldon: You're right, you did kind of kill the mood.

Beverly Hofstadter: Come to Mommy.
Penny: It's okay. Go ahead. *Leonard hugs Beverly*
Beverly Hofstadter: Oh, my son.
Leonard: Oh, my mother.
Penny: Oh, my God.

Beverly Hofstadter: There's something I need to say to you.
Leonard: Oh really? That's too bad.
Beverly Hofstadter: Leonard, I always made you earn my affection. But today I realized that there's more than one way to raise a child.
Sheldon: I taught her that!
Beverly Hofstadter: Therefore, I would like to initiate a new protocol wherein I shower you with unconditional love.
Leonard: Wow. When does that start?
Beverly Hofstadter: So needy.

Mary Cooper: I'm so glad that you and I were able to bury the hatchet.
Beverly Hofstadter: Me, too. And I respect your right to your beliefs.
Mary Cooper: And I will pray for you.

Mary Cooper: Hey, who's in the mood for spaghetti and hot dogs?
Leonard: Oh me.
Penny: Yeah, me too.
Mary Cooper: Coming up.
Leonard: I don't really feel I deserve it.

Mary Cooper: When your mom gets back, I'm gonna need to apologize for the way I spoke to her.
Penny: Well, come on, she did kinda start it.
Mary Cooper: Doesn't matter. A good Christian would have turned the other cheek. On the other hand, a good Texan would have shot her, so I'll just split the difference.

Penny: Yeah, and you certainly don't have to earn my love.
Leonard: Thank you.
Penny: Of course you already knew that when you bought me this princess-cut drill bit.

Leonard: Not once did my mother ever give me any love or affection for just being myself. I always had to earn it.
Mary Cooper: Oh, Leonard, I'm sure she loves you very much. In her own cold godless way.

Beverly Hofstadter: Do you suppose you would have flourished more in a more reward-based environment?
Sheldon: Perhaps. But my mom made me spaghetti with chopped up hot dogs whenever I wanted, so who cares.

Beverly Hofstadter: I can't help but notice how her unconditional love for you is diametrically opposed to my own parenting strategies.
Sheldon: Well, you doled out affection as a reward for achievement. A proven way to raise a child. Or train a rat.

Beverly Hofstadter: But look how well you turned out.
Sheldon: I'd feign modesty at this point, but who would believe me?