Leonard: Howard, could I borrow some after shave?
Howard: Black case, top compartment.
Leonard: That is a lot of cologne.
Howard: First row are your musks, second is wood, leathers and botanicals, third is assorted pheromones, tread lightly.

Wolowitz: I'm a horny engineer, Leonard. I never joke about math or sex.

Howard: I have got to learn how to draw.

Howard: Look, there are plenty of bars in Los Angeles where you can order grasshoppers and chocolate martinis, but you wouldn't have to because there are no women in them.

Leonard: How about those two?
Howard: Nah, they're eating peanuts. My allergies, one kiss would put me in Cedar-Sinai for a week.

Wolowitz: Penny, let me take this opportunity to point out that you are looking particularly ravishing today.
Penny: Not with a thousand condoms, Howard.
Wolowitz: So there is a number.

Howard: Shucks means shucks. Let one go once in a while.

Howard: Yeah, I thought about renting this apartment, but I'm really more of a downtown loft kind of guy.
Alicia: Cool. So are you in a loft now?
Howard: Oh, actually I'm, uh, living with a woman in Altadena. Purely platonic, she's also my maid.
Alicia: Sounds like a sweet deal.
Howard: I won't lie, it's pretty dope.

Sheldon: Camouflaging bald spots. That's primarily a male concern. Perhaps we could expand our market.
Penny: How are flower barrettes going to appeal to men?
Wolowitz: We add Bluetooth.

Howard: Hey, you know what'd be a great idea? We get some girls over here and play Laser Obstacle Strip Chess.
Leonard: Believe me, Howard, any girl who would be willing to play that, you don't want to see naked.
Howard: You underestimate me.

Penny: Well, it's a little juvenile. I mean, it kind of looks like the MySpace page of a 13-year-old girl.
Leonard: No, it doesn't.
Howard: Please, Dateline could use it to attract predators.

Sheldon: Of course, but before we set up a marketing and distribution infrastructure, we should finish optimizing the manufacturing process. To start with, she has a terrible problem with moisture-induced glitter clump.
Penny: Yeah, it's a bitch.
Howard: Uh, I've seen this before.
Leonard: Where?
Howard: It's a common stripper problem. They dance, they sweat, they clump.

Sheldon: Okay, that, right there, that equivocation and self-doubt, that is not the American spirit. Did Davy Crockett quit at the Alamo? Did Jim Bowie?
Howard: They didn't quit. They were massacred by, like, a gazillion angry Mexicans.

Howard: It's hot in here, it must be Summer.

Howard: You know the old saying: pasty and frail never fail.