Leonard goes to a wedding as Amy's date and Howard and Bernadette spend the weekend with Mrs. Wolowitz.
Here are the quotes:
Shelton: I've seen pictures of your mother, keep eating.
Howard: When I say honey, I mean my fiance'
Penny: I'm not driving him.
Amy: Leonard please, I don't need the running commentary.
Amy: Now I'm thinking about what I read.
Sheldon: I'm going in with an open mind. It's "O" gauge or no gauge.
Howard: She actually has hair on her chinny chin chin.
Amy: How was your shower?
Amy: I'm like a possum.
Leonard: Rough night Casey Jones?
Sheldon: You said there would be other scientists there my age.
Mrs. Wolowitz: In or out, we don't need bugs!
Mrs. Wolowitz: After all your sleep overs with the little brown boy...
Sheldon: The smaller the train, the more concentrated the fun.
Amy: When you are done copping a feel, that goes on my wrist.
Sheldon: I'm an HO trainiac!
Mrs Wolowitz: Hubba, Hubba
Amy: I'm being a delight here.
Leonard: I'm fun.
Mrs. Wolowitz: The eagle has landed.
Howard: And we have splashdown.
Amy: Hokey Pokey is the young man's game.
Amy: I accidently made Leonard fall in love with me.
Amy: The perfect combination of Madonna and whore.
Amy: Leonard just doesn't get my motor running.
Amy: This body is never going to be his wonderland.
Leonard: My groin is a little worse for wear.
Howard: Good morning Mom.
Bernadette: He wants butter!