Leonard: I'm going to guess that your main concern is the time commitment of watching an entire season of a new show.
Sheldon: Oh, no, not just a season. If I'm in, I'm in for the whole run, even if the quality declines.
Leonard: I get it. Smallville almost wrecked you.
Sheldon: Exactly. You know, I waited ten years to see a guy everyone knows can fly, fly.

Penny: Well, Sheldon, when you're kissing a girl, she expects the attention to be on her.
Sheldon: It was. I asked her if she thought I should watch The Flash.

Penny: What'd you say to her?
Sheldon: Well, I just asked her if I should start watching the new Flash TV series.
Penny: And that made her angry?
Sheldon: Baffling, right? We were necking like a couple of hooligans under the school bleachers. I stopped so I could ask the question. Next thing I know, good-bye, kissy face. Hello, yelly face.

Sheldon: What happened?
Penny: Your buddy got mugged by some baby farm animals.
Sheldon: Been there.

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.

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

Sheldon: But still, you need to consider how successful Leonard's brother and sister are.
Beverly Hofstadter: I suppose.
Sheldon: While my brother and sister are mouth-breathing idiots.

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'm terribly sorry that I upset your mother.
Sheldon: Oh, it's all right. She'll forgive you. She has to or she goes to hell.

Sheldon: Well, now I have to correct you. As a bit of an elephant seal buff, the more accurate comparison would be when two mother seals actively seek to nourish the same pup. So I believe the term you're looking for is a double mother suckler
Leonard: Yeah, you're right. That is the term I'm looking for. You are a dirty double mother suckler!
Sheldon: Okay, well, now that we have the terminology straightened out, how dare you?

Leonard: So, Mom, you haven't seen Penny since we got engaged.
Penny: Yeah, let me show you the ring.
Beverly Hofstadter: Oh, lovely. Must have been very expensive.
Sheldon: Oh, no, not at all. No, we found a place online that repurposes diamond drill bits.
Leonard: We did not. That's not true. Can I speak to you alone for a second?
Sheldon: Oh, sure.
Leonard: It came from Tiffany's.
Sheldon: You mean the box, right?
Leonard: Keep walking!

Mary Cooper: Shelly does not like change.
Sheldon: True. But all the clenching in the world will not keep testicles in your abdomen.

Sheldon: Oh, and here's a picture of me receiving my bachelor of science degree.
Beverly Hofstadter: You don't look very happy.
Sheldon: Well, I had just begun puberty. It was figuratively and literally one of the hairiest moments of my life.