Sheldon: ... now you're going to need a stronger friend named latex.
Mrs. Cooper: Are you having the sex talk with me?
Sheldon: Well someone has to.
Mrs. Cooper: Oh, dear Lord!
Sheldon: Yeah, well... No, don't look at him, he's mad at you right now.

Sheldon: Then why are you doing it?
Mrs. Cooper: Because I'm not perfect, Shelly. And that man's booty is.

I love my mother. Even if she fornicates like a demonic weasel.

Sheldon

Apparently any man is welcome in his house, why not you?

Sheldon

Sheldon: Can you recommend a surface you haven't had coitus on?
Mrs. Cooper: That's not funny. Maybe we should sit at the table.

Mrs. Cooper: Shelly! I'm so glad you're here!
Sheldon: I saw you having naked sex.

I used to live in those genitals. And if someone wants to move into my old room, I should at least get a vote.

Sheldon

Sheldon: Do you have any idea what it's like to see your mother ravaging someone?
Howard: Does a brisket count?

I saw my mommy with a naked man and she was trying to be a mommy again.

Sheldon

Penny: Who's the murderer?
Raj: Any question but that.
Penny: Sorry ... hey, who's not the murderer?

Penny: Are you going to lay on the floor and pretend to be dead all night?
Stuart: What do you think I'd do at home?

It's too late. He's been murdered by someone in this room.

Raj

The Big Bang Theory Season 7 Episode 18 Quotes

Well, I told Howie if I wasn't busy I'd spend the night at his mom's. So for God's sake think of something.

Bernadette

He has a very sensitive butt. Well, it's true. I once saw him sit on a bunch of loose change and add it all up.

Leonard