Howard: There's a party for incoming post-docs tonight. Go to it and meet someone who isn't made of grease or pie.
Raj: You think you're so cool because your wife is a person?

And, space beats water.

Howard: When this all blows over, remember that voice. It's kind of a turn-on.
Bernadette: It turns you on when I sound like Raj?

Howard: Son of a bitch, she's gone.
Bernadette: Where'd she go?
Howard: I don't know. She didn't leave a note.
Bernadette: You were the one who was supposed to put her back in the stroller!
Howard: No, I wasn't! You were!
Bernadette: No, I wasn't!
Howard: Yes, you were!
Bernadette: Well, you throw like a girl.

Howard: Classy dog.
Raj: Yes. Also, don't forget to close the toilet or she'll drink out of it.
Howard: I feel for ya I have a psychotic mommy, too.

Howard: How'd you get him to come to your house?
Sheldon: As Professor Proton says, "There is no problem you can't solve if you use your noggin."
Leonard: And, he wrote him a check.
Sheldon: Yeah, that too. A big check.

Howard: Why don't you put her in a kennel?
Raj: Why don't you put your mother in a home?
Howard: To be honest, she'd do better in the kennel.

However long you think the foreplay should be, triple it.

Howard: So take what's in that blog and use it to get her pants off.
Raj: Why do you have to make everything so filthy? Why couldn't you just say the blog is like her giving me the key to her heart?
Howard: The key to her heart. That's nice. Were you quoting someone or is it tattooed on the small of your back?
Raj: I was quoting a man who knows a thing or two about women: Sir Elton John.

Howard: People change names on blogs to protect their privacy. Roger is Raj.
Raj: Oh, I always thought, if I had a white name, it would be Gavin.

Raj: I can see my little princess while I'm at work, right?
Howard: Why can't you just watch porn like a normal guy?

Leonard: Oh, you do what you want, but I don't want to lose my friends over tenure. Friends are forever.
Howard [coughing]: So, is tenure.

TBBT Quotes

It's very simple. Scissors cuts paper, paper covers rock, rock crushes lizard, lizard poisons Spock, Spock smashes scissors, scissors decapitates lizard, lizard eats paper, paper disproves Spock, Spock vaporizes rock, and, as it always has, rock crushes scissors

Sheldon

Sheldon: Why do you have the Chinese character for "soup" tattooed on your right buttock?
Penny: It's not "soup," it's "courage."
Sheldon: No it isn't. But I suppose it does take courage to demonstrate that kind of commitment to soup.
Penny: How'd you see it? You said you wouldn't look.
Sheldon: Sorry. As I told you, the hero always peeks.