EXCLUSIVE: Kaley Cuoco admits she's 'not' excited for 'The Big Bang Theory' baby!

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Kaley Cuoco Is NOT Excited For Babies on the 'Big Bang Theory' Set!

It's been almost two months sinceThe Big Bang Theory dropped their baby bombshell, and we're still in shock -- especially after learning that the pregnancy plot twist was a last-minute addition!

"It was not talked about at all," executive producer Steve Molaro exclusively dished to ET at PaleyFest earlier this month. "We were writing that Valentine's Day episode and there was no baby in the outline."

"There were four or five of us in the writers' room on a Saturday afternoon and we were at the end and just thinking of ways to finish the episode," the showrunner recalled. "I just said, 'I don't even know why I'm pitching this, but what if Bernadette says to the rabbit, 'I'll find another time to tell him I'm pregnant.'"

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"A quiet fell over the room and then several writers were like, 'Oh my god, can we do it please?! That's so amazing!'" Molaro shared. "And I said, 'Screw it, let's do it. Type it! Have her say it.' And that was it."

Bernadette's baby news was even kept under wraps from Big Bang's creator and head honcho, Chuck Lorre, until right before the episode was filmed.

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EXCLUSIVE: Kaley Cuoco admits she's 'not' excited for 'The Big Bang Theory' baby!
LOS ANGELES - APRIL 19: 'The Line Substitution Solution' -- Pictured: Trevor (Blake Anderson), Sheldon Cooper (Jim Parsons), Leonard Hofstadter (Johnny Galecki), Howard Wolowitz (Simon Helberg) and Rajesh Koothrappali (Kunal Nayyar). Sheldon hires Stuart to spend the day with Amy when he'd rather go to a movie screening. Also, Leonard's mother, Beverly (Christine Baranski), comes to town and Penny struggles to make a connection with her, on THE BIG BANG THEORY, Thursday, May 5 (8:00-8:31, ET/PT) on the CBS Television Network. (Photo by Michael Yarish/CBS via Getty Images)
LOS ANGELES - APRIL 19: 'The Line Substitution Solution' -- Pictured: Sheldon Cooper (Jim Parsons), Leonard Hofstadter (Johnny Galecki), Stuart (Kevin Sussman) and Howard Wolowitz (Simon Helberg). Sheldon hires Stuart to spend the day with Amy when he'd rather go to a movie screening. Also, Leonard's mother, Beverly (Christine Baranski), comes to town and Penny struggles to make a connection with her, on THE BIG BANG THEORY, Thursday, May 5 (8:00-8:31, ET/PT) on the CBS Television Network. (Photo by Michael Yarish/CBS via Getty Images)
LOS ANGELES - APRIL 19: 'The Line Substitution Solution' -- Pictured: Sheldon Cooper (Jim Parsons), Howard Wolowitz (Simon Helberg), Rajesh Koothrappali (Kunal Nayyar) and Leonard Hofstadter (Johnny Galecki). Sheldon hires Stuart to spend the day with Amy when he'd rather go to a movie screening. Also, Leonard's mother, Beverly (Christine Baranski), comes to town and Penny struggles to make a connection with her, on THE BIG BANG THEORY, Thursday, May 5 (8:00-8:31, ET/PT) on the CBS Television Network. (Photo by Michael Yarish/CBS via Getty Images)
HOLLYWOOD, CALIFORNIA - MARCH 16: (L-R) Moderator Alie Ward, executive producers Chuck Lorre, Steven Molaro, Bill Prady, actors Mayim Bialik, Jim Parsons, Kaley Cuoco, Johnny Galecki, Simon Helberg, and Kunal Nayyar attend The Paley Center For Media's 33rd Annual PALEYFEST Los Angeles ÃThe Big Bang Theory' at Dolby Theatre on March 16, 2016 in Hollywood, California. (Photo by Matt Winkelmeyer/Getty Images)
BEVERLY HILLS, CA - MARCH 09: (L-R) Actors Jim Parsons, Melissa Rauch, Kunal Nayyar, Kaley Cuoco, Simon Helberg, Mayim Bialik and Johnny Galecki perform onstage during the 24th and final 'A Night at Sardi's' to benefit the Alzheimer's Association at The Beverly Hilton Hotel on March 9, 2016 in Beverly Hills, California. (Photo by Jesse Grant/Getty Images)
MUST SEE TV: AN ALL-STAR TRIBUTE TO JAMES BURROWS -- Pictured: (l-r) Kaley Cuoco, Simon Helberg, Johnny Galecki, Jim Parsons -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
LOS ANGELES - FEBRUARY 2: 'The Positive Negative Reaction' -- Bernadette is concerned when Wolowitz freaks out over her pregnancy announcement, and Wolowitz is convinced he must make more money to provide for the baby, on THE BIG BANG THEORY, Thursday, Feb. 18 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Pictured left to right: Kunal Nayyar, Simon Helberg, Johnny Galecki and Jim Parsons (Photo by Sonja Flemming/CBS via Getty Images)
LOS ANGELES - JANUARY 19: 'The Valentino Submergence' -- Sheldon and Amy host a live Valentine's Day episode of Fun with Flags, Leonard and Penny grapple with getting older, Howard and Bernadette find a surprise in their hot tub and Raj is torn between Emily and the cute girl he met at the Comic Bookstore, on THE BIG BANG THEORY, Thursday, Feb. 11 (8:00-8:31 PM, ET/PT), on the CBS Television Network. Pictured left to right: Johnny Galecki, Simon Helberg, Jim Parsons and Kunal Nayyar (Photo by Monty Brinton/CBS via Getty Images)
LOS ANGELES - FEBRUARY 8: 'The Celebration Experimentation' -- After more than nine years together, the gang finally celebrates Sheldon's birthday, surprising him with a special guest, on the 200th episode of THE BIG BANG THEORY, Thursday, Feb. 25 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Pictured left to right: Jim Parsons, Kunal Nayyar, Sara Gilbert, Kevin Sussman, Adam West, Simon Helberg, Melissa Rauch, John Ross Bowie, Wil Wheaton, Johnny Galecki and Kaley Cuoco (Photo by Monty Brinton/CBS via Getty Images)
LOS ANGELES - FEBRUARY 2: 'The Positive Negative Reaction' -- Bernadette is concerned when Wolowitz freaks out over her pregnancy announcement, and Wolowitz is convinced he must make more money to provide for the baby, on THE BIG BANG THEORY, Thursday, Feb. 18 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Pictured left to right: Simon Helberg, Kunal Nayyar, Jim Parsons and Johnny Galecki (Photo by Sonja Flemming/CBS via Getty Images)
LOS ANGELES - AUGUST 30: 'The Pulled Groin Extrapolation' -- Sheldon and Penny wonder how they'll get along when Leonard goes to a wedding as Amy's date. Meanwhile, Howard (Simon Helberg, left) and Bernadette (Melissa Rauch, right) spend the weekend with Mrs. Wolowitz, on THE BIG BANG THEORY, Thursday, Sept. 29 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Photo by Richard Cartwright/CBS via Getty Images)
LOS ANGELES - SEPTEMBER 23: 'The Workplace Proximity' -- Howard (Simon Helberg, left) finds himself sleeping on Raj'™s couch after a fight with Bernadette, on THE BIG BANG THEORY, Thursday, Oct. 17 (8:00 -“ 8:31 PM, ET/PT) on the CBS Television Network. Also pictured: Johnny Galecki (right) (Photo by Monty Brinton/CBS via Getty Images)
LOS ANGELES - APRIL 15: 'The Gorilla Dissolution' -- Howard (Simon Helberg, left) and Bernadette (Melissa Rauch, right) struggle to care for Mrs. Wolowitz, on THE BIG BANG THEORY, Thursday, May 8 (8:00-8:31 PM, ET/PT) on the CBS Television Network. (Photo by Sonja Flemming/CBS via Getty Images)
The cast and crew of €œ'The Big Bang Theory' accepts the award for favorite network TV comedy at the 40th annual People's Choice Awards at the Nokia Theatre L.A. Live on Wednesday, Jan. 8, 2014, in Los Angeles. (Photo by Chris Pizzello/Invision/AP)
LOS ANGELES, CA - SEPTEMBER 18: Kaley Cuoco is seen at 'Jimmy Kimmel Live' on September 18, 2014 in Los Angeles, California. (Photo by RB/Bauer-Griffin/GC Images)
LOS ANGELES, CA - SEPTEMBER 20: Kaley Cuoco is seen in Los Angeles on September 20, 2014 in Los Angeles, California. (Photo by Bauer-Griffin/GC Images)
LOS ANGELES, CA - SEPTEMBER 20: Kaley Cuoco is seen in Los Angeles on September 20, 2014 in Los Angeles, California. (Photo by Bauer-Griffin/GC Images)
LOS ANGELES, CA - AUGUST 25: Actress Kaley Cuoco (R) and husband Ryan Sweeting (L) attend HBO's 2014 Emmy after party at The Plaza at the Pacific Design Center on August 25, 2014 in Los Angeles, California. (Photo by Barry King/FilmMagic)
GOOD MORNING AMERICA - Rihanna, Steve Martin and Jim Parsons are all guests on 'Good Morning America,' 3/13/15, airing on the ABC Television Network. (Photo by Lou Rocco/ABC via Getty Images)
LOS ANGELES, CA - AUGUST 25: Actress Kaley Cuoco arrives to the 66th Annual Primetime Emmy Awards at Nokia Theatre L.A. Live on August 25, 2014 in Los Angeles, California. (Photo by C Flanigan/Getty Images)
BURBANK - JULY 23: Gallery Promo Coverage of CBS' THE BIG BANG THEORY, scheduled to air on the CBS Television Network. Pictured: Simon Helberg as Howard Wolowitz. (Photo by Monty Brinton/CBS via Getty Images)
Kaley Cuoco accepts the Favorite Comedic TV Actress award for The Big Bang Theory at the 40th annual People's Choice Awards at Nokia Theatre L.A. Live on Wednesday, Jan. 8, 2014, in Los Angeles. (Photo by Frank Micelotta/Invision/AP)
Mayim Bialik, winner of the award for favorite network TV comedy for "The Big Bang Theory," poses backstage at the People's Choice Awards at the Nokia Theatre on Wednesday Jan. 9, 2013, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)
Craig Ferguson, right, and "The Big Bang Theory" panel on Day 2 of Comic-Con on Friday, July 25, 2014, in San Diego. (Photo by Richard Shotwell/Invision/AP)
Jim Parsons poses with the award for best actor in a comedy series for “The Big Bang Theory” in the press room at the Critics' Choice Television Awards at the Beverly Hilton Hotel on Thursday, June 19, 2014, in Beverly Hills, Calif. (Photo by Richard Shotwell/Invision/AP)
Jim Parsons poses backstage with the award for outstanding lead actor in a comedy series for his role on “The Big Bang Theory” at the 65th Primetime Emmy Awards at Nokia Theatre on Sunday Sept. 22, 2013, in Los Angeles. (Photo by Dan Steinberg/Invision/AP)
Kunal Nayyar and Johnny Galecki accept the award for best supporting actor in a comedy series on behalf of winner Simon Helberg for "The Big Bang Theory" at the Critics' Choice Television Awards in the Beverly Hilton Hotel on Monday, June 10, 2013, in Beverly Hills, Calif. (Photo by Frank Micelotta/Invision/AP)
CORRECTS BYLINE TO CHRIS PIZZELLO - Kaley Cuoco poses backstage with her award for best supporting actress in a comedy series for "The Big Bang Theory" at the Critics' Choice Television Awards in the Beverly Hilton Hotel on Monday, June 10, 2013, in Beverly Hills, Calif. (Photo by Chris Pizzello/Invision/AP)
In this Tuesday, May 7, 2013 photo, actor Simon Helberg poses for a portrait in Los Angeles. Helberg is a co-star of the CBS television show, "The Big Bang Theory." (Photo by Matt Sayles/Invision/AP)
From left, actors Johnny Galecki, Kunal Nayyar, Mayim Bialik, Jim Parsons, Melissa Rauch, Simon Helberg and Kaley Cuoco, from the cast of "The Big Bang Theory," pose backstage at the 21st Annual 'A Night at Sardi's' to benefit the Alzheimer's Association at the Beverly Hilton Hotel on Wednesday, March 20, 2013 in Beverly Hills, Calif. (Photo by John Shearer/Invision for Alzheimer's Association/AP Images)
IMAGE DISTRIBUTED FOR ALZHEIMER'S ASSOCIATION - From left, actors Kunal Nayyar, Melissa Rauch, Jim Parsons, Mayim Bialik and Simon Helberg, from the cast of "The Big Bang Theory," arrive at the 21st Annual 'A Night at Sardi's' to benefit the Alzheimer's Association at the Beverly Hilton Hotel on Wednesday, March 20, 2013 in Beverly Hills, Calif. (Photo by Jordan Strauss/Invision for Alzheimer's Association/AP Images)
Photo of Kunal Nayyar, left, and Simon Helberg courtesy of Samsung Galaxy, taken during the Paley Center for Media's PaleyFest, honoring The Big Bang Theory at the Saban Theatre, Wednesday March 13, 2013 in Los Angeles, California. (Photo by Kevin Parry/Invision/AP)
Photo of Jim Parsons courtesy of Samsung Galaxy, taken during the Paley Center for Media's PaleyFest, honoring The Big Bang Theory at the Saban Theatre, Wednesday March 13, 2013 in Los Angeles, California. (Photo by Kevin Parry/Invision/AP)
Photo of Johnny Galecki, left, and Kunal Nayyar courtesy of Samsung Galaxy, taken during the Paley Center for Media's PaleyFest, honoring The Big Bang Theory at the Saban Theatre, Wednesday March 13, 2013 in Los Angeles, California. (Photo by Kevin Parry/Invision/AP)
Photo of Mayim Bialik, left, and Jim Parsons courtesy of Samsung Galaxy, taken during the Paley Center for Media's PaleyFest, honoring The Big Bang Theory at the Saban Theatre, Wednesday March 13, 2013 in Los Angeles, California. (Photo by Kevin Parry/Invision/AP)
Photo of Kunal Nayyar courtesy of Samsung Galaxy, taken during the Paley Center for Media's PaleyFest, honoring The Big Bang Theory at the Saban Theatre, Wednesday March 13, 2013 in Los Angeles, California. (Photo by Kevin Parry/Invision/AP)
Photo of Simon Helberg courtesy of Samsung Galaxy, taken during the Paley Center for Media's PaleyFest, honoring The Big Bang Theory at the Saban Theatre, Wednesday March 13, 2013 in Los Angeles, California. (Photo by Kevin Parry/Invision/AP)
Kaley Cuoco poses on arrival at the Paley Center for Media's PaleyFest, honoring The Big Bang Theory at the Saban Theatre, Wednesday March 13, 2013 in Los Angeles, California. (Photo by Kevin Parry/Invision/AP)
Johnny Galecki arrives during the Paley Center for Media's PaleyFest, honoring The Big Bang Theory at the Saban Theatre, Wednesday March 13, 2013 in Los Angeles, California. (Photo by Kevin Parry/Invision/AP)
Mayim Bialik poses on arrival at the Paley Center for Media's PaleyFest, honoring The Big Bang Theory at the Saban Theatre, Wednesday March 13, 2013 in Los Angeles, California. (Photo by Kevin Parry/Invision/AP)
Melissa Rauch poses on arrival at the Paley Center for Media's PaleyFest, honoring The Big Bang Theory at the Saban Theatre, Wednesday March 13, 2013 in Los Angeles, California. (Photo by Kevin Parry/Invision/AP)
CORRECTS IDENTITY - Jim Parsons poses on arrival at the Paley Center for Media's PaleyFest, honoring The Big Bang Theory at the Saban Theatre, Wednesday March 13, 2013 in Los Angeles, California. (Photo by Kevin Parry/Invision/AP)
The cast of "The Big Bang Theory" pose backstage with the award for favorite network TV comedy at the People's Choice Awards at the Nokia Theatre on Wednesday Jan. 9, 2013, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)
Kaley Cuoco, winner of the award for favorite network TV comedy for "The Big Bang Theory," poses backstage at the People's Choice Awards at the Nokia Theatre on Wednesday Jan. 9, 2013, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)
BEVERLY HILLS, CA - DECEMBER 18: Actress Kaley Cuoco-Sweeting arrives at The PEOPLE Magazine Awards at The Beverly Hilton Hotel on December 18, 2014 in Beverly Hills, California. (Photo by Jon Kopaloff/FilmMagic)
NEW YORK - MAY 18: CBS announces their new fall schedule. (Jeffrey R. Staab/CBS via Getty Images) *** CBS presented its 2016-17 prime time schedule today (May 18) at Carnegie Hall, where many of the Networks new and returning series stars were in attendance. Pictured L-R: Melissa Rauch, Mayim Bialik, Simon Helberg, Kaley Cuoco, Jim Parsons, and Johnny Galecki from THE BIG BANG THEORY *** Melissa Rauch;Mayim Bialik;Simon Helberg;Kaley Cuoco;Jim Parsons;Johnny Galecki
LOS ANGELES - SEPTEMBER 9: 'The Hook-Up Reverberation' -- Raj's honesty about his past comes back to haunt him after his girlfriend, Emily, is cold to Penny. Also, the guys consider becoming part-owners in Stuart's comic book store, on THE BIG BANG THEORY, Monday, Oct. 6 (8:00-8:31, ET/PT), on the CBS Television Network. Pictured left to right: Laura Spencer, Simon Helberg, Melissa Rauch, Mayim Bialik, Jim Parsons, Johnny Galecki and Kaley Cuoco-Sweeting (Photo by Sonja Flemming/CBS via Getty Images)
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"I handed the script over to Chuck the next morning and I said to him, 'I tried a couple things. See what you think,'" Molaro explained. "He had no idea and he came back later with the script and he goes: 'So, Bernadette is pregnant? Sure, why not? Go do it!' and he walked out and that was that."

MORE: 'Big Bang' Baby Bombshell -- Can You Believe Bernadette Is Pregnant?!

Although the creators and fans are thrilled at the idea of the new little addition to the series, thecomedy's cast members are understandably hesitant about having infant co-stars.

"It will be interesting if we have fake babies or if we actually will have them around," Kunal Nayyar pondered. "Because then we're going to have to cast babies like the Olsen twins."

When we asked Kaley Cuoco if she's excited to be working with some potential twins on the Big Bang set, the blonde beauty was completely unfiltered with her response: "No, I'm not," she said bluntly.

"Twins? Really?!" she exclaimed after realizing that more than one Big Bang baby could be crawling around the comic book store. "Oh wait, yeah, because they have to get multiples. Oh, god!"

MORE: When Will We Finally Meet Penny's Mom on 'Big Bang'?!

Jim Parsons, on the other hand, is a little bit more optimistic about the plot twist. "Jim is fine with a baby coming on the show because it's not mine," the Emmy winner said with a laugh.

But the bigger question is, how is Sheldon going to feel about having a baby around? "I don't know if he's going to be excited about it, but I kind of hope not because that would mean that I have to hold it for lots of episodes," Parsons said.

Cuoco confessed that she has an idea to postpone the inevitable baby invasion. "Maybe [Bernadette] can be pregnant for, like, three seasons so we can wait a couple of years, but we'll see," she said.

"No dogs and no babies -- that's my rule," Cuoco added. "At home, yeah, but not on set. Not at work."

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Not to worry, guys! Molaro assured us that this bundle of joy will not change the dynamic of TV's No. 1 comedy. "The fact that it's Bernadette and Howard is a way that it's manageable," he admitted. "If it was Penny, that could seriously alter the DNA of the show."

"They don't live on the main set," Molaro continued, "and there are baby sitters, and there are parents, and there are grandparents, so I think this is a way to introduce this fun without truly altering what the show is."

The Big Bang Theory airs Thursdays at 8 p.m. ET/PT on CBS.

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