EXCLUSIVE: George Clooney's dad talks son's twins, jokes that Father's Day is a 'minor league holiday'


George and Amal Clooney's twins are already quite the babblers!

At least that's what George's dad, Nick Clooney, told ET when he spoke to Nancy O'Dell to discuss how little Ella and Alexander are doing.

"They're wonderful, and I'll tell you this: They're both very vocal," the proud grandfather revealed. "Oh my, yes."

MORE: George Clooney's Dad Nick Says His Son Will Be a 'Hands-On' Father to His 'Beautiful' Twins

And while the couple welcomed their two tykes on June 6, with Father's Day right around the corner, Nick hilariously revealed that he shared with his son the blunt truth about the holiday.

See photos of George and Amal Clooney together:

28 PHOTOS
George Clooney and Amal Clooney together
See Gallery
George Clooney and Amal Clooney together
PARIS, FRANCE - FEBRUARY 24: George Clooney and Amal Clooney arrive at the Cesar Film Awards 2017 at Salle Pleyel on February 24, 2017 in Paris, France. (Photo by Fran�is Pauletto/Corbis via Getty Images)
(FILES) File photo dated February 24, 2017 shows US actor George Clooney and his wife British-Lebanese lawyer Amal Clooney as they arrive for the 42nd edition of the Cesar Ceremony at the Salle Pleyel in Paris. The couple welcomed their twin babies, Ella and Alexander, June 6, 2017 in London, the actor's publicist said. The 39-year-old human rights lawyer and 56-year-old Hollywood star -- both first-time parents -- tied the knot in Venice in 2014. / AFP PHOTO / bertrand GUAY (Photo credit should read BERTRAND GUAY/AFP/Getty Images)
PARIS, FRANCE - FEBRUARY 24: George Clooney and Amal Clooney arrive at the Cesar Film Awards Ceremony at Salle Pleyel on February 24, 2017 in Paris, France. (Photo by Rindoff/Charriau/Getty Images)
LONDON, ENGLAND - JANUARY 09: George and Amal Clooney attend the Netflix special screening and reception of The White Helmets hosted by The Clooney Foundation For Justice with George and Amal Clooney, at the Bvlgari Hotel on January 9, 2017 in London, England. (Photo by David M. Benett/Dave Benett/Getty Images for Netflix )
NEW YORK, NY - SEPTEMBER 20: (AFP OUT) Actor George Clooney (L) and wife Amal Clooney attend a Leaders Summit for Refugees during the United Nations 71st session of the General Debate at the United Nations General Assembly on September 20, 2016 in New York, New York. (Photo by Peter Foley - Pool/Getty Images)
CANNES, FRANCE - MAY 12: George Clooney and Amal Clooney attend the 'Money Monster' Premiere during the 69th annual Cannes Film Festival on May 12, 2016 in Cannes, France. (Photo by Tony Barson/FilmMagic)
VATICAN CITY, VATICAN - MAY 29: George Clooney and Amal Clooney attend 'Un Muro o Un Ponte' Seminary held by Pope Francis at the Paul VI Hall on May 29, 2016 in Vatican City, Vatican. (Photo by Franco Origlia/Getty Images)
(FILES) File photo dated February 11, 2016 shows US actor George Clooney (R)and his wife Amal arrive at the 66th Berlinale Film Festival in Berlin. George and Amal Clooney welcomed their twin babies, Ella and Alexander, on June 6, 2017 in London, the actor's publicist Stan Rosenfeld said. The 39-year-old human rights lawyer and 56-year-old Hollywood star -- both first-time parents -- tied the knot in Venice in 2014. / AFP PHOTO / John MACDOUGALL (Photo credit should read JOHN MACDOUGALL/AFP/Getty Images)
WESTWOOD, CA - FEBRUARY 01: Amal Clooney and George Clooney arrive at the premiere of Universal Pictures' 'Hail, Caesar!' at Regency Village Theatre on February 1, 2016 in Westwood, California. (Photo by Gregg DeGuire/WireImage)
WESTWOOD, CA - FEBRUARY 01: George Clooney and Amal Clooney arrives at the Premiere Of Universal Pictures' 'Hail, Caesar!' at Regency Village Theatre on February 1, 2016 in Westwood, California. (Photo by Steve Granitz/WireImage)
Lawyer Amal Alamuddin Clooney and Actor George Clooney arrive at the premiere of 'Our Brand In Crisis' held at the TCL Chinese Theater in Hollywood. (Photo by Frank Trapper/Corbis via Getty Images)
HOLLYWOOD, CA - OCTOBER 26: Amal Clooney and George Clooney attend the premiere of 'Our Brand Is Crisis' at TCL Chinese Theatre on October 26, 2015 in Hollywood, California. (Photo by Jason LaVeris/FilmMagic)
NEW YORK, NY - SEPTEMBER 29: George Clooney (L) and Amal Clooney are seen in Midtown on September 29, 2015 in New York City. (Photo by Michael Stewart/GC Images)
IBIZA, SPAIN - AUGUST 23: (L-R) Michael Meldman, Monica Gambee, Amal Alamuddin, George Clooney, Rande Gerber and Cindy Crawford host the official launch of Casamigos Tequila in Ibiza, at Ushuaia Ibiza Beach hotel on August 23, 2015 in Ibiza, Spain. (Photo by Europa Press/Europa Press via Getty Images)
IBIZA, SPAIN - AUGUST 23: Amal Clooney (L) and Founder of Casamigos Tequila George Clooney attend as Casamigos founders Rande Gerber, George Clooney and Mike Meldman host the official launch of Casamigos Tequila in Ibiza and Spain at Ushuaia Ibiza Beach Hotel on August 23, 2015 in Ibiza, Spain. (Photo by David M. Benett/Dave Benett/Getty Images for Casamigos Tequila)
US movie star George Clooney (R), accompanied by his wife Amal (L), arrives at Haneda airport in Tokyo on May 24, 2015. Clooney is now here for the Japanese premiere of his new film 'Tomorrowland', a retro-futuristic spectacle mixing environmental themes with sci-fi wizardry. AFP PHOTO / Yoshikazu TSUNO (Photo credit should read YOSHIKAZU TSUNO/AFP/Getty Images)
TOKYO, JAPAN - MAY 25: Lawyer Amal Clooney (R) and actor George Clooney (L) attends the Tokyo premiere of 'Tomorrowland' at Roppongi Hills on May 25, 2015 in Tokyo, Japan. (Photo by Atsushi Tomura/Getty Images)
ANAHEIM, CA - MAY 09: (L-R) Mia Alamuddin, actor George Clooney and lawyer Amal Clooney attend the premiere of Disney's 'Tomorrowland' at AMC Downtown Disney 12 Theater on May 9, 2015 in Anaheim, California. (Photo by Alberto E. Rodriguez/Getty Images for Disney)
NEW YORK, NY - MAY 04: Actor George Clooney and lawyer Amal Clooney attend the 'China: Through The Looking Glass' Costume Institute Benefit Gala at the Metropolitan Museum of Art on May 4, 2015 in New York City. (Photo by Axelle/Bauer-Griffin/FilmMagic)
NEW YORK, NY - MAY 02: Amal Clooney and George Clooney are seen on May 2, 2015 in New York City. (Photo by NCP/Star Max/GC Images)
NEW YORK - APRIL 28: Amal Clooney, George Clooney get dinner at Caravaggio in Upper East Side on APRIL 28, 2015 in New York, New York. (Photo by Josiah Kamau/BuzzFoto via Getty Images)
NEW YORK - MARCH 07: George Clooney and Amal Clooney get dinner at Kappo Masa sushi restaurant in Upper East Side seen out in the Big Apple in yellow on MARCH 07, 2015 in New York, New York. (Photo by Josiah Kamau/BuzzFoto via Getty Images)
BEVERLY HILLS, CA - JANUARY 11: Actor George Clooney (L) and Amal Clooney attend the 72nd Annual Golden Globe Awards at The Beverly Hilton Hotel on January 11, 2015 in Beverly Hills, California. (Photo by Jason Merritt/Getty Images)
George and Amal leave Venice town hall Ca'Farsetti after their civil marriage cerimony (Photo by Giulia Candussi/Corbis via Getty Images)
VENICE, ITALY - SEPTEMBER 29: George Clooney and Amal Alamuddin sighted on the way to their civil wedding at Canal Grande on September 29, 2014 in Venice, Italy. (Photo by Robino Salvatore/GC Images)
VENICE, ITALY - SEPTEMBER 28: George Clooney and Amal Alamuddin leave the Aman Hotel on September 28, 2014 in Venice, Italy. George Clooney is set to marry his lawyer fiancee Amal Alamuddin this weekend in Venice where they met. (Photo by PVS/GC Images)
VENICE, ITALY - SEPTEMBER 26: George Clooney and Amal Alamuddin arrive in Venice on September 26, 2014 in Venice, Italy. George Clooney is set to marry his lawyer fiancee Amal Alamuddin this weekend in Venice where they met. (Photo by PVS/GC Images)
HIDE CAPTION
SHOW CAPTION
of
SEE ALL
BACK TO SLIDE

"I was explaining to George on this holiday thing, that Father's Day is pretty much of a minor league holiday and he is going to have to get used to that," Nick shared. "As long as he didn't get the stretch marks, he doesn't get the adulation."

"Mother's Day is a big deal, Father's Day is just a supporting character," he added.

That's a fair point!

NEWS: George Clooney's 'One Fine' Day Daughter Mae Whitman Congratulates Him on Twins With Epic Throwback Pic

Still, Nick said he has seen a changed man in his son ever since the actor first found out he was going to be a dad.

"Since the word came out that he was going to be a father, no question about it, he changed," Nick explained. "This has nothing to do with age, but this is a different kind of maturity. When you figure out that you're going to take that standard responsibility that everybody else has done for years, and now you're on the merry-go-round. You're in the middle."

See photos of Nick Clooney:

23 PHOTOS
George Clooney's dad, Nick
See Gallery
George Clooney's dad, Nick
(Original Caption) Supporting the U.S. Army northern area command's March of Dimes is Private Nick Clooney, brother of singer Rosemary Clooney. He is a disc jockey for the Armed Forces network 'Platter Parade,' broadcast yearly in support of the campaign to raise funds for the fight against infantile paralysis.
UNITED STATES - JANUARY 17: THE MONEYMAZE - 1974-75, Contestants answered questions and then, from their positions overlooking a giant maze, guided their partners through the maze toward a target., Pictured: host Nick Clooney, (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - JANUARY 17: THE MONEYMAZE - 1974-75, Contestants answered questions and then, from their positions overlooking a giant maze, guided their partners through the maze toward a target., Pictured: host Nick Clooney, (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - JANUARY 17: THE MONEYMAZE - 1974-75, Contestants answered questions and then, from their positions overlooking a giant maze, guided their partners through the maze toward a target., Pictured: host Nick Clooney, (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - JANUARY 17: THE MONEYMAZE - 1974-75, Contestants answered questions and then, from their positions overlooking a giant maze, guided their partners through the maze toward a target., Pictured: host Nick Clooney, (Photo by ABC Photo Archives/ABC via Getty Images)
UNITED STATES - JANUARY 17: THE MONEYMAZE - 1974-75, Contestants answered questions and then, from their positions overlooking a giant maze, guided their partners through the maze toward a target., Pictured: host Nick Clooney, (Photo by ABC Photo Archives/ABC via Getty Images)
NEW YORK CITY - SEPTEMBER 22: Actor George Clooney and father Nick Clooney attend 'The Peacemaker' New York City Premiere on September 22, 1997 at the Ziegfeld Theatre in New York City. (Photo by Ron Galella, Ltd./WireImage)
Nick Clooney, George Clooney, and Nina Clooney during 'The Peacemaker' New York City Premiere at Ziegfeld Theater in New York City, New York, United States. (Photo by Ron Galella, Ltd./WireImage)
NEW YORK CITY - NOVEMBER 23: Nick Clooney attends 69th Annual Macy's Thanksgiving Day Parade on November 23, 1995 in New York City. (Photo by Ron Galella, Ltd./WireImage)
NEW YORK CITY - SEPTEMBER 22: Nick Clooney and Nina Clooney attend the premiere of 'The Peacemaker' on September 22, 1997 at the Ziegfeld Theater in New York City. (Photo by Ron Galella, Ltd./WireImage)
Dante DiPaolo, Rosemary Clooney, Nick Clooney and wife (Photo by Ron Galella, Ltd./WireImage)
UNITED STATES - CIRCA 2000: George Clooney arrives with his father, Nick Clooney, for screening of the movie 'O Brother, Where Art Thou?' at the Ziegfeld Theater. George stars in the film. (Photo by Richard Corkery/NY Daily News Archive via Getty Images)
383526 01: (ITALY OUT) Actor George Clooney, center, his uncle Jack Warren, Warren''s wife, Dica, Clooney''s mother, Nina, his father, Nick and his grandmother, Lyda attend the premiere of Clooney''s film 'O Brother, Where Art Thou?' December 19, 2000 at the Ziegfeld Theater in Manhattan. (Photo by Arnaldo Magnani/Liaison)
George Clooney with his parents Nick and Nina Clooney at the premiere of 'Confessions of a Dangerous Mind' at the Bruin Theatre and after-party at the W Hotel in Los Angeles, Ca. Wednesday, Dec. 11, 2002. Photo by Kevin Winter/ImageDirect.
WASHINGTON - NOVEMBER 28: Journalist Nick Clooney, father of actor George Clooney, introduces the film Moments That Changed Us on November 28, 2008 in Washington, DC. The film, which Mr. Clooney helped to write and produce, is about Apple Computer co-founder Steve Wozniak. (Photo by Brendan Hoffman/Getty Images)
WASHINGTON - NOVEMBER 13: (L ??? R) Journalist in Residence at the Newseum Nick Clooney, Apollo 8 Crew Members Frank Borman, James Lovell, and William Anders listen to questions from the audiences during a live taping of a NASA TV program at the Newseum November 13, 2008 in Washington, DC. The former astronauts participated in a discussion on the December 1968 lunar orbital mission and how the success of Apollo 8 contributed to the overall moon landing effort that culminated just six months later with Apollo 11 and to commemorate NASA's 50th anniversary. (Photo by Alex Wong/Getty Images)
NEW YORK, NY - OCTOBER 05: Former journalist/TV personality Nick Clooney and son actor George Clooney attend the after party for the premiere of 'The Ides of March' at the Metropolitan Club on October 5, 2011 in New York City. (Photo by Stephen Lovekin/Getty Images)
WASHINGTON, DC - MARCH 16: (ALTERNATIVE CROP) Journalist Nick Clooney (L), his son actor George Clooney (2nd L) and U.S. Rep. Jim Moran (D-VA) (2nd R) are arrested by members of the U.S. Secret Service Uniform Division during a protest outside the Sudanese Embassy March 16, 2012 in Washington, DC. Activists, Congressional members, human rights and faith leaders participated in a civil disobedience to protest Sudanese President Omar al-Bashir?s blockading of food and humanitarian aid for a half a million people in Sudan's Nuba Mountains and Blue Nile regions. (Photo by Alex Wong/Getty Images)
WASHINGTON, DC - MARCH 16: Actor George Clooney (2nd L) speaks as his journalist father Nick Clooney (2nd R), U.S. Rep. Jim Moran (D-VA) (L) and President of United to End Genocide Tom Andrews (R) listen during a protest outside the Sudanese Embassy March 16, 2012 in Washington, DC. Activists, Congressional members, human rights and faith leaders participated in a civil disobedience to protest Sudanese President Omar al-Bashir?s blockading of food and humanitarian aid for a half a million people in Sudan's Nuba Mountains and Blue Nile regions. (Photo by Alex Wong/Getty Images)
Actor and activist George Clooney and his father Nick Clooney speak to the press after their release from the Metropolitan Police second district station on March 16, 2012 in Washington. Clooney and his father were arrested earlier in the day while protesting at the Sudanese embassy. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
WASHINGTON, DC - MARCH 16: Journalist Nick Clooney (2nd L) speaks as his son and actor George Clooney (L) and President of United to End Genocide Tom Andrews (R) listen during a protest outside the Sudanese Embassy March 16, 2012 in Washington, DC. Activists, Congressional members, human rights and faith leaders participated in a civil disobedience to protest Sudanese President Omar al-Bashir?s blockading of food and humanitarian aid for a half a million people in Sudan's Nuba Mountains and Blue Nile regions. (Photo by Alex Wong/Getty Images)
Nick Clooney attends 'The Monuments Men' Premiere at the Ziegfeld Theater in New York City. ?? LAN (Photo by Lars Niki/Corbis via Getty Images)
HIDE CAPTION
SHOW CAPTION
of
SEE ALL
BACK TO SLIDE

One thing that this sort of maturity entails -- a lot of sleepless nights.

WATCH: George and Amal Clooney Join Twins Club! Jennifer Lopez, Chris Hemsworth and More Stars With Double the Joy!

"I suspect, and i can't verify this," Nick said, "he will not get any standard rest until about December 15."

And it's important to Nick to give Amal and George the time they need to adjust to their new reality.

"I'm going to stay as far away as possible until they get some kind of an idea of what this is all about, and they're in the midst of doing that now," he said. "They deserve as much quiet time and private time as possible."

EXCLUSIVE: Julie Chen Praises George Clooney's Dad Skills and 8 More A-List Pals Who Can't Stop Gushing!

That's some pretty sound wisdom from a happy grandpa!

Watch the video below for how celebs reacted to the Clooney babies.

Read Full Story

Sign up for Entertainment Insider by AOL to get the hottest pop culture news delivered straight to your inbox!

Subscribe to our other newsletters

Emails may offer personalized content or ads. Learn more. You may unsubscribe any time.