... with the whiter-than-Marshmallow-Fluff Leonard Hofstadter.

Sheldon

I understand the alcohol has stirred up whatever it is that makes girls go wild ... but I really need to talk to smart Amy right now.

Sheldon

The real danger is him biting off my face while I'm sleeping.

Amy

I kissed a girl and I liked it. I hope my boyfriend don't mind...

Amy singing

Irrelevant. Leonard doesn't trim his nose hair. He thinks because he's short, no one can see up there.

Sheldon

Oh, cool, I've got a lawyer and I've seen her naked.

Leonard

Leonard, let the man pee.

Priya

Her freakishly small hands make anything look big. That's one of the reasons I love her.

Howard

Oh, Bernadette, please play my clarinet.

Raj's poem

And for years, everyone in my family was convinced that he was the clarinet enthusiast.

Priya

Everyone was set a-twitter. Although oddly, no one tweeted.

Sheldon

Penny: All right, try thinking about this -- Sheldon and Amy had sex.
Raj: Shut your ass.

The Big Bang Theory Season 4 Quotes

You have broad hips and a certain corn-fed vigor. Is your womb available for rental?

Sheldon

At best, it's a modest leap forward from the technology that gave us Country Bear Jamboree.

Sheldon