At one point Raj put on reggae music and his sister took off her shoes. It was like the last days of Caligula.

Sheldon

Penny, I'm sorry you got dragged into this. I know you're devastated that your ex-boyfriend has an exciting new lover with flawless, camel-colored skin.

Amy

Don't be needy, bestie. That's probably part of what chased Leonard away.

Amy

Yo, P-dog.

Amy

She used to be much more fun until Leonard punched her in the heart.

Amy

You do understand that it will distract you from the rich variety of sweet loving that your ex-boyfriend is currently receiving from the fiery jewel of Mumbai.

Amy

That crazy bastard is looking at quirky in the rear view mirror.

Howard

Bernadette: Leonard's really one of a kind.
Amy: Saying that while holding a snowflake is a bit heavy-handed don't you think?

I think it's like Beetlejuice. We said his name too many times.

Howard

Good news! Thanks to you I was able to make a rhesus monkey cry like a disgraced televangelist.

Amy

I'm regretting my earlier cattiness; she's an absolute delight.

Amy

Penny: Today I drove to Van Nuys for an audition that I thought was for a cat food commercial. Turned out to be porn.
Sheldon: Did you get the part?

The Big Bang Theory Season 4 Quotes

Penny: Hey, Sheldon, did you change your Wi-Fi password again?
Sheldon: Yes, it's "Penny, get your own Wi-Fi." No spaces.

Raj: Well, to paraphrase Shakespeare: It's better to have loved and lost than to stay home every night and download increasingly shameful pornography.
Penny: Oh... you poor baby.
Raj: What's wrong with me, Penny?
Penny: Nothing, nothing. You know, if we weren't friends - and you hadn't brought up that creepy pornography story - I'd be on you like the speed of light squared on matter to make energy.
Raj: Hey, you totally got that right. E = MC squared.
Penny: I listen. I have no idea what it means, but I listen.