Sheldon: This is my ticket to Star Wars. I don't need to tell you that it is worth far more than its face value of $15.50. I trust you'll give it to someone worthy.
(Sheldon hands the ticket to Leonard)
Leonard: You got it. Penny might want to join us-
(Sheldon yanks the ticket out of Leonard's hand and goes to Raj)
Sheldon: This is my ticket to Star Wars...

Sheldon: Enjoy the neurobiology conference.
Amy: I will. I wish you were here.
Sheldon: At a neurobiology conference? What a mean thing to say.
Amy: Okay, I'm glad you're not here?
Sheldon: Aww, you always know just what to say after I tell you what to say.

Amy: Look, I know you both feel bad about being alone, but sometimes the best thing you can do is take a little time for yourself, especially when you just got out of a relationship.
Sheldon: Speaking of ending relationships, when British Honduras became Belize, they designed a new flag with a tree on it, and I would like to hang myself from that tree.

Sheldon: I like a party as much as the next man, as long as the next man doesn't like a party.

Sheldon: *Knock, knock, knock* Amy. *Knock, knock, knock* Amy. *Knock, knock, knock* Amy.
Amy: Come in.
Sheldon: Hello, everyone. Oh, Beverly, good to see you. I'd love to chat, but there's a line that could start moving any minute, so let's do this. Amy? A proper apology requires three steps. Step one, an admission of wrongdoing. Amy, I was wrong. Step two, a promise never to repeat said action. Amy, that action will never be repeated, and that's a promise. Step three, an earnest request for forgiveness. Amy, I hope you can forgive me. And I hope you do it right now, 'cause there's an Uber waiting downstairs, and I don't want to repeat this apology nonsense with my driver Ganesh.
Amy: Fine.
Sheldon: Oh, thanks, you're a peach. Beverly, we'll catch up soon. Bernadette, it was a pleasure as always. Penny, you have spinach in your teeth.

Sheldon: All right, pick a card.
Howard: Okay.
Sheldon: Bippity-boppity-boo.
Howard: What's with the wand and the beep?
Sheldon: The wand is called showmanship, and the beep is none of your business. Oh, excuse me, I'm getting a text message completely unrelated to this magic trick. Oh, look, my dry cleaning's ready. And your card was the five of spades. Ta-da.
Raj: These cards have bar-codes on them. The wand is a reader. It's transmitting to your phone.
Sheldon: I said, ta-da. Show's over.

Sheldon: We just leave the house on Friday night, and we return in the wee hours emotionally wrung out from the work of convincing Leo to go back into rehab.
Leonard: So he goes back into rehab?
Sheldon: Yes. But he can relapse if Penny ever invites us to go hear her sing again.
Leonard: You still told her I lied.
Sheldon: For a noble purpose, to spare me the social embarrassment of having a drug-addled first cousin, which I'm assuming is embarrassing, yes?
Leonard: I don't know. How am I supposed to remember all of this?
Sheldon: That's the best part. You don't have to. See, I told Penny that you would be embarrassed if you knew that she found out that you had lied. So she's agreed to operate as if the original lie was still in force.
Leonard: So she's expecting me to lie about going to a symposium in Pasadena, when in actuality we're pretending to go to a drug intervention in Long Beach?
Sheldon: Un-unravelable.

Leonard: God, Sheldon. What the hell are you doing out there?
Sheldon: I heard a noise.
Leonard: It was us. We knocked over a lamp.
Sheldon: Why would you knock over a lamp?
Leonard: We were going to have...
Penny: He doesn't need to know what we were doing, Leonard.
Sheldon: Oh! No, she's right, I don't need to know what you were doing. Carry on.

Sheldon: The vibration. We are directly underneath the geology lab, and they're running their confounded sieve shakers again. Hey, gravel monkeys, if you need to shake rocks, try jiggling your heads around!

Beverly Hofstadter: I don't see why I should have to watch your father parade around with some Bible-thumping bumpkin.
Sheldon: Oh. Excuse me, that is my mother you're talking about, however accurately.

Amy: Bert is studying the way microbes in rocks can survive in extreme environmental conditions.
Leonard: They say it could be a potential indicator of life on other planets.
Penny: You know what, I've met Bert. Isn't he an indicator of life on other planets?
Sheldon: You used to make those jokes about me. Now everything's Bert, Bert, Bert.

Sheldon: It's not my fault I'm bad at sharing; I skipped kindergarten.

Howard: How'd you even get that up the stairs?
Sheldon: I said to myself, "I think I can, I think I can." And then I couldn't, so I paid two men who promised not to come rob us later.

Sheldon: Leonard pointed out to me that I'm not always a loving and supportive boyfriend, so here's some quality luggage.
Amy: Thank you.
Sheldon: The salesman said it could survive a plane crash, so perhaps you should fly inside it.

Raj: Does this place look familiar?
Sheldon: It's hard to say.
Bartender: Hey, Sheldon's back!
Everybody: Sheldon!
Sheldon: It's getting clearer.