- Leonard Hofstadter: Barry, a team of Swedish scientists is going to do our experiment before we do. Can you lend us some liquid helium?
- Barry Kripke: Sowwy, but there's a hewium shortage, and I need it for my quantum excitation expewiment.
- Leonard Hofstadter: You don't need that much.
- Barry Kripke: Twue, but if it's successful, I'm planning to have a party with bawwoons.
- Barry Kripke: Be honest, if the shoe were on the other foot, would you do the same for me?
- Leonard Hofstadter: Yes.
- Sheldon Cooper: Not a chance. Sorry, but he said to be honest, and mother always said that honesty is the best policy.
- Howard Wolowitz: Can't you just use regular helium?
- Leonard Hofstadter: We'd have to go to every Party City in Pasadena.
- Howard Wolowitz: [to Raj] Sounds like you on Cinco de Mayo.
- Raj Koothrappali: Hey! Everyone was still talking about that party on Siete de Mayo.
- Leonard Hofstadter: You can trust us, we're respected scientists.
- Sheldon Cooper: Well, he is. I'm a wedding planner who can't find love himself.
- Sheldon Cooper: Well, the Swedes might beat us, but at least we won't get gang-noogied in prison.
- Leonard Hofstadter: Is "Ernest Goes to Jail" the only prison movie you've seen?
- Sheldon Cooper: It scared me straight, Leonard.
- Stuart Bloom: It shows me all the single women in a 5-mile radius who are using the app. If I like the way they look, I hit thumbs up. If I don't, thumbs down.
- Bernadette Rostenkowski: What would make you give a girl a thumbs down.
- Stuart Bloom: First time it happens, I will let you know.