Leonard: You, uh, moving in to the apartment on the fifth floor?
Cole: No, I was just visiting a friend.
Leonard: Oh, cool. The cute blond on four?
Cole: Yeah, you know her?
Leonard: I see her around. I like to keep my distance because her boyfriend is a pretty scary dude.
Cole: Really?
Leonard: Yeah. He's ganged up.
Cole: She told me he's a scientist.
Leonard: That's the name of his gang. The Scientists. They're crazy.
Cole: Well, thanks for the tip.
Leonard: No problem, brother. Stay frosty.

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: My point is, while you're spending all this time on your own, building computers or practicing your cello, what you're really doing is becoming interesting. When people finally do notice you, they're gonna find someone a lot cooler than they thought. And for those of you that were popular in high school, it's over, sorry. Thank you. Congratulations.

Sheldon: You may not realize it, but I have difficulty navigating certain aspects of daily life. You know, understanding sarcasm, feigning interest in others, not talking about trains as much as I want. It's exhausting!

Sheldon: (Playing hackey sack) One, two, three, four, five, six, seven, eight. Drat. I'm never going to get to forty-three again. One, two, three, four. Rats.

Penny: Hey! Shouldn't you be out with your gang spray painting equations on the sides of buildings?