909 - The Platonic Permutation
Aired November 19, 2015

The Platonic Permutation

Sheldon and Amy try hanging out as friends when they spend Thanksgiving together at the aquarium. Also, Wolowitz reluctantly agrees to volunteer at the soup kitchen with Bernadette, Raj and Emily, and Penny discovers that Leonard knows more about her than she thought.

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Guest Stars: Elon Musk as Himself, Wayne Wilderson as Travis

Writers: Jim Reynolds (Story), Jeremy Howe (Story), Tara Hernandez (Story), Steve Holland (Teleplay), Maria Ferrari (Teleplay), Adam Faberman (Teleplay)

Director: Mark Cendrowski

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Episode Notes

  • The title refers to Sheldon and Amy spending Thanksgiving together as friends following their break-up.

Quotes (41)

Amy: Let's see. I have been on six dates with three different people. It was either for coffee or dinner. One I met at a bookstore and two I met online. I haven't slept with anyone. The aquarium is 40 minutes away. And there's a baggie of Cheerios for you in the glove compartment.
Sheldon: Uh, regular or honey nut?
Amy: I mixed them.
Sheldon: You mixed them. No wonder gentleman callers are pounding down your door.

Sheldon: Amy, I excel at many things, but getting over you wasn't one of them. I think I need to just be your friend.

Amy: Sheldon, we've known each other a long time. We are perfectly capable of having a conversation without relying on a list off the Internet.
Sheldon: All right. Well, what should we talk about?
Amy: I don't know. Just ask me whatever comes to mind.
Sheldon: Very well. I know you've been seeing other men. Have you had coitus with any of them?
Amy: Man, I walked right into that one.

Raj: Have you guys seen this feature that lets you talk to Siri without pressing any buttons?
Howard: No. How does it work?
Raj: You just say, uh, "Hey, Siri, what time is it?"
Siri: The time is 6:37 p.m.
Howard: So now anyone can control your phone? Hey, Siri, show me pictures of naked grandma butts.
Raj: Nice try. It only recognizes my voice.
Howard: Oh, cool. (Imitates Raj): Hey, Siri, show me pictures of naked grandma butts.
Raj: I don't sound like that.
Siri: Here are some images of naked grandma butts.

Leonard: Face it, you can't stump me. I am the king of husbands.
I know that you don't like the lingerie that I got you on Valentine's Day.
I know you hate the word "moist."
I know-
Penny: Hang on. Wait, wait. Why don't I like the lingerie you got me?
Leonard: Because it's orange and you think it makes you look like a slutty carrot.
Penny: Interesting. I never told you that.
Leonard: Sure you did.
Penny: No. I never told anyone that. But I did write it in my journal.
Leonard: (In a high-pitched voice) What? I didn't know you had a journal.
Penny: I also know your voice gets higher when you're lying.
Leonard: (In a deep voice) No, it doesn't.

News Stories

Title Date Posted
909 'The Platonic Permutation' Press Release November 10, 2015

CBS has released the synopsis for the November 19 episode of The Big Bang Theory, "The Platonic Permutation". Inventor and Tesla CEO Elon Musk makes a cameo appearance as himself in the episode.  Full story