The Big Bang Theory

The Werewolf Transformation

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The Werewolf Transformation
The Werewolf Transformation sheldon, leonard and angelo
The Big Bang Theory episode
Season 5, Episode 18
February 23, 2012
Guest star(s)
Episode guide

"The Rothman Disintegration"

"The Weekend Vortex"
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Season 6

"The Werewolf Transformation" is the eighteenth episode of the fifth season of  the American sitcom The Big Bang Theory. This episode first aired on Thursday, February 23, 2012.[1]


When Sheldon's regular barber goes into the hospital, causing Sheldon's regimented life to go awry, he starts acting erratic even for him.

Extended PlotEdit

Sheldon goes to get a haircut and finds that his regular barber is hospitalized in a coma. He tries to let the barber's nephew cut his hair, but Sheldon bolts as soon as the barber starts to tell a story. As usual, Sheldon is driving the gang crazy since his world is out of order. Penny offers to trim his hair but Sheldon declines her “skills of the hill folks.” Howard gets a letter requesting him to report for astronaut training in Houston, which he is excited about but Sheldon’s hair problem seems to be the topic of the day.

While at Amy’s apartment desperately looking for a new barber, Amy suggests that he would look sexy with really long hair and riding a horse, shirtless. Then she leaves to have a long session "brushing her teeth" (with her vibrating electric toothbrush).

The werewolf transformation bernadette

Talking to Howard in Houston during his astronaut training.

Howard video chats with Bernadette about his first day of training and describes his experiences with zero gravity and his vomiting reaction. Sheldon goes to visit his barber who is in a coma and brings him a teddy bear, tries to get him to wake up, but is chased out by the nurse, who thought he had escaped from the psychiatric floor.

At apartment 4A, Leonard teaches Penny how to play chess and she beats him the very first time. Sheldon comes in, first letting Penny sit in his seat, then lamenting how the order of his life is falling apart not being able to get a haircut. Sheldon then says he should "embrace the chaos" and that it might be fun. Then, he decides to wear his Tuesday night pajamas on the wrong night.

Back in astronaut training, Howard describes his outdoor survival test that included sleeping in a hole with an armadillo and eating a butterfly. Bernadette takes pity on him and flies to Houston to take care of him, but quickly learns that Howard’s mother is already there.

The Werewolf Transformation Sheldon leaving with his bongos

Wherever the music takes me, kitten.

Back at the apartment, Sheldon wakes everyone up at 3 AM playing the bongos as did the noted physicist Richard Feynman. Penny runs over, very annoyed. Sheldon keeps repeating what everyone says using the rhythm of his bongo playing. Since Sheldon’s world is now in chaos, he doesn't even care when Leonard tries to invoke The Roommate Agreement. Sheldon leaves, playing the bongos, and ends up falling down the stairs.

The next morning, Penny and Leonard find Sheldon asleep on Amy's couch. Leonard wakes up Sheldon by abruptly banging on his bongos. Penny again offers to cut Sheldon’s hair, reminding him of all the other times she’s taken care of him. Sheldon asks Amy's opinion and she says that there isn't a hair on her body that she wouldn't let Penny cut.

In her apartment, Penny finishes Sheldon’s haircut and though he thinks it looks a bit Hollywood, he is happy with it. As she tries to trim his neck, Sheldon giggles and apologizes, explaining that clippers sometimes tickle him. When she tries again, he unexpectedly throws his head back into the clipper's path in a sudden fit of giggling, which causes it to shave off some of his hair in the back. Penny quickly covers up her horrified reaction and tells Sheldon that she's done (making sure to take away the hand mirror he's holding). After Sheldon innocently leaves, Penny tells herself that she is going to have to move after that little discretion.


  • The TV Critic: "Each season I hope The Big Bang Theory is going to turn a corner in terms of quality but it still hasn't happened. After a run of good episodes these last four have been poor. More than that they have been forgettable and complacent. It seems like the writers don't really discern between what works well and what feels tired and generic."[2]
  • The A.V. club gave this episode a B+[3]
  • IMDb user reviews


  • Title Reference: The title is derived from Sheldon missing out his haircut schedule, due to his regular barber being hospitalized and he refuses to get his haircut somewhere else, which leads to his hair growing out a little bit, thus equating this situation to a werewolf-like transformation.
  • Chuck Lorre's vanity card.
  • This episode was watched by 16.2 million people with a rating of 5.3 (adults 18-49).[4]
  • This episode aired in Canada on March 5, 2012 with 3.513 million viewers and a weekly ranking of #2.[5]
  • In Australia, it aired on March 12, 2012 with 1.312 million viewers.[6]
  • Episode transcript [1]

Costume NotesEdit

  • While playing chess, Penny wears a long sleeved purple and aqua striped shirt by James Perse sold by Nordstrom. While cutting Sheldon's hair, she sports a Nico Blossom top by Lucky Brand, at one time available at but appears discontinued.



Sheldon: To paraphrase T.S. Eliot, this is the way the world ends. Not with a bang, but with a nephew.

Sheldon: Get well beary soon!

Penny: If I were you, I'd be worried that a girl who never played chess in her life just kicked your ass.

Sheldon: Hello!

Penny: (sitting on Sheldon's spot, starts to move when she sees him) Hey, sorry Sheldon, I'll move.
Sheldon: (does not seem bothered by Penny) Why? My spot, your spot, what difference does it make?
(Penny and Leonard frown at him)
Penny: Okay, what just happened?
Leonard: I don't know... Between you playing chess like Bobby Fischer, and Sheldon being okay with you sitting in his spot, I'm guessing someone went back in time, stepped on a bug, and changed the course of human events.

Sheldon: It's been six days since I was supposed to get a haircut.

Leonard: Would you stop that!
Sheldon: (flips his hair) I can't help it, I feel like a teen-heartthrob.

Sheldon: I have spent my entire life, trying to bring order into the universe.

Sheldon: Let's embrace the chaos!
Leonard: What are you gonna do first?

Leonard: Don't be Sheldon with bongos!

Sheldon: (Playing his bongo and in a sing-along voice) Hel-lo Leonard, do you like, my bong-os? Bet you di-dn't know, that I had, bong-os!
Leonard: Sheldon, its three o'clock in the morning.
Sheldon: (continuing to drum and sing) Three, in-the-morning, is a good time, for bong-os!
Leonard: I was sleeping!
Sheldon: Leo-nard sleeps, while, I play, bong-os!
Leonard: No, he doesn't!
Sheldon: Leo-nard NO sleep, while, I play, bong-os! Bongo solo! (Hits on his bongos wildly)
Leonard: Stop it!

Penny: Where are you going?
Sheldon: Wherever the music takes me, kitten.

Sheldon: Never play the bongos walking down the stairs.

Howard: Tonight, when she's asleep, I'll spoon you like an armadillo.

Raj: (Reading Howard's travel orders out loud) Payload specialist Howard Wolowitz is requested to report to the NASA Johnson Space Center, Houston, Texas for astronaut training, Monday 8:00 am.
Howard: Yeah, but it's from NASA so it's 0800.
Raj: But it says 8 am.
Howard: Y'know, it does have an 'o' in front of it... Oh my god, I'm an astronaut and you're dying of jealousy!

Leonard: Sheldon, be nice!
Sheldon: I'm sorry. It's the bad boy attitude that comes with this hair.

Amy: Well, this isn't a crisis, why don't you just let your hair grow out a li'l.
Sheldon: Why don't I let my hair grow out?! Um, why don't a start wearing Birkenstocks, and seeking validation of my opinions by asking "Can you dig it?"
Amy: I don't know. I think you might look sexy with long hair. With the kind that...flows down to your shoulders, and blows back while riding on a horse. Bare back and bare-chested... I'm gonna go brush my teeth, it might take a while.

Penny: All right, Sheldon, this craziness has gone on long enough. Please come home so I can cut your hair.
Sheldon Cooper: Penny, you're not trained, you're not licensed, and most importantly, you don't have access to my haircut records.
Penny: All right, honey, look. We've known each other for a long time now, right? I've taken you to Disneyland, I kicked a bully in the nuts for you, I sing you Soft Kitty when you're sick. You've even seen me naked once.
Leonard: I'm sorry, what?
Penny: It's a long story. Anyway, Sheldon, I promise I know what I'm doing. Please let me cut your hair.
Sheldon Cooper: Amy, what do you think?
Amy: There's not a hair on my body I wouldn't let this woman trim. (Penny smiles and then looks at Amy shocked.)

Amy: I’m a cowboy, on a steel horse I ride. I’m wanted… I’m wanted... wanted, dead or alive. Sheldon, you’re ruining girlfriend-boyfriend sing-along night.

Leonard: (Playing bongos to wake Sheldon up) Sheldon like to sleep, while Leonard play the bongo!


The Big Bang Theory ~ Sheldon Plays The Bongos ~ The Werewolf Transformation02:23

The Big Bang Theory ~ Sheldon Plays The Bongos ~ The Werewolf Transformation

TBBT 5X18 The Werewolf Transformation Promo (CTV) - Canadian Version00:31

TBBT 5X18 The Werewolf Transformation Promo (CTV) - Canadian Version


  • Bernadette video chats with Howard who is undergoing astronaut's training.
  • Penny beats Leonard at chess.
  • Sheldon with Leonard at the barber shop, only to discover that his usual barber is not there.
  • Sheldon plays bongos.
  • Penny's sleep is disturbed by Sheldon's bongos.
  • Leonard and Penny listen to Sheldon's woe.
  • Sheldon and his bongos.
  • Sheldon and Leonard.
  • Howard, Raj, Sheldon, and Leonard having dinner.
  • Howard, Raj, and Sheldon.
  • Amy and her harp.
  • Sheldon falls asleep at Amy's and Penny and Leonard come over to pick him up.
  • Sheldon visits his sick barber at the hospital.
  • Leonard has his own theory regarding Sheldon's weird behavior.
  • Howard and Raj.
  • Wherever the music takes me, kitten.
  • Sheldon being yelled at by Leonard.
  • Sheldon's bongo solo.
  • Leonard and Penny are puzzled with Sheldon.
  • Sheldon enters the room, not caring that Penny is sitting in his spot.
  • Penny during dinner.
  • Penny's reaction to Sheldon.
  • Leonard and Penny having a conversation with Sheldon.
  • Leonard listens to Sheldon's rambling.
  • Leonard reacts to Sheldon's bongo-playing.
  • Sheldon complains to Penny about missing his haircut schedule.
  • Sheldon tries to get his hair out of his eyes.
  • Sheldon thinks he is a teen-heartthrob given the state of his hair.
  • Chuck Lorre Productions, #186 Redux.


  1. The Big Bang Theory - The Werewolf Transformation (TV Episode 2012) - IMDb
  2. The TV Critic's Review
  3. The Big Bang Theory: “The Werewolf Transformation” - TV Club - The A.V. Club
  4. Thursday Final Ratings: 'Big Bang Theory,' 'American Idol,' 'The Mentalist' Adjusted Up; 'Rob,' 'Private Practice,' 'Up All Night' Adjusted Down". Retrieved February 24, 2012. - Zap2it
  5. Top Programs – Total Canada (English) February 20 – February 26, 2012 - BBM Canada
  6. Monday 12 March 2012 - TV Tonight

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