Howard: You know, the Pishkin-Wolowitz liquid-waste-disposal system is turning a few heads as well.
Ramona: Again, ew.

Raj: I love this time of the year. The leaves are turning, there's a bracing chill in the air.
Howard: Plus there's a whole new crop of female grad students about to put on just enough winter weight to make them needy and vulnerable. That's right, honey, have another calzone. Daddy can wait.

Penny: Whats Sheldon's deal? Is it girls, guys, sock puppets?
Howard: We operate on the assumption that Sheldon has no deal. Though we have many theories about how he might reproduce. I'm an advocate of mitosis.
Penny: What?
Howard: I believe that one day Sheldon will eat an enormous amount of Thai food and spilt into two Sheldons.

Howard: Howard Wolowitz, department of engineering, co-designer of the International Space Station's Liquid Waste Disposal System.
Ramona: Ew.

Howard: You know, the Pishkin-Wolowitz Liquid Waste Disposal System is turning a few heads as well.
Ramona: Again, ew.

Leonard: Sheldon, I told you, I only have access to the free-electron laser at night. I can't drive you for the next few weeks.
Sheldon: No, you said you couldn't drive me to work, this is from work.
Leonard: Howard, help me out here.
Howard: No, just for the fun of it, I'm gonna take his side.
Sheldon: Now, how do you propose I get home?
Leonard: How did you get here in the first place?
Sheldon: Penny. But I sense that's no longer an option.
Leonard: Look, I need to get to the laser lab, you're just going to have to find someone else to take you home. [Sheldon looks to Howard]
Howard: Oh damn, I picked the wrong side.

Howard: Fine, what colour do you want?
Sheldon: You know the pale blue of Luke Skywalker's lightsaber, before it was digitally remastered?
Howard: Black it is.

(Sheldon smiles in a grotesque way).
Howard: Oh crap that's terrifying.

Howard: Hey, good news, you don't have to sulk about Penny any more. Look, there are hundreds of Croatian women just waiting for you to contact them.
Leonard: Anythingforagreencard.com?
Howard: I'll lend you my user name, it's wealthybigpenis.
Leonard: You're joking.
Howard: Well, you gotta make it easy for them. They're just learning English.

Wolowitz: It is I, Sir Howard of Wolowitz.

Raj: What's with him?
Leonard: Penny is keeping him up at night.
Howard: Me too. But probably in a different way.

Penny: Listen, I need to talk to Sheldon.
Howard: (Raj whispers in his ear) No, that's what she said, Sheldon.

Howard: What the frak?
Leonard: Beats me. They were playing all last night too.
Raj: It's like some kind of weird comic book crossover.
Howard: Like if Hulk were dating Peppermint Patty.
Raj: I always thought Peppermint Patty was a lesbian?
Leonard: No, that's Marcie. Peppermint Patty's just athletic.

Leslie: Well, I would postulate that she's escaping into the online world to compensate for her sexual frustration.
Howard: I do that too. But probably in a different way.

Howard: Renaissance fairs aren't about historical accuracy, they're about taking chubby girls who work at Kinko's and lacing them up in corsets so tight their bosoms jump out and say "Howdy".
Sheldon: Bosoms would not have said "Howdy" in the 15th century. If anything, they would've said "Huzzah".
Howard: I don't care what the bosoms say, Sheldon, I just want to be part of the conversation.