Sheldon: Hey! He did that on purpose,
Leonard: No, he didn't. Nothing that's happening here is being done on purpose. Okay, uh, forget one-on-one. Let's try a free throw contest. First person who makes a basket wins the office.
Barry Kripke: Making it too easy there, Hofstadter.
Leonard: No. No, I'm not.

Leonard: What would you be if you were attached to another object by an inclined plane, wrapped helically around an axis?
Sheldon: Screwed?
Leonard: There you go.

Sheldon: This song is never going to stop. Have you ever dealt with something so relentlessly irritating?
Leonard: That's a trick question, right?

Leonard: Penny, as a scientist, my job is to figure out why things happen. But I don't think I'll ever understand how someone like me could get to be with someone like you. You know maybe I don't need to understand it, I just need to be grateful. I love you, Penny.

Amy: I'll let you in on a little secret. Originally, we were painted nude. But I had him add clothes cause I thought it was an unnecessary challenge to our heterosexuality.
Penny: Yeah, good call.
Amy: But, if you ever change your mind, all it would take is some warm, soapy water and a couple of sponges.
Penny: You're talking about the painting, right?
Amy: Sure.

Sheldon: I'm trying to raise the temperature in here before my nipples tear through my shirt.

Penny: It's kind of heavy.
Bernadette: Too bad you're not as strong as the dude in the painting.