• George Clooney devised a way to get his twins to behave during the holidays by using Santa Claus
  • The actor would act as if Santa is checking on them whenever his kids start getting at each other
  • Clooney joked he can't use this trick for Easter because he doesn't know how the Easter bunny sounds

George Clooney has one clever trick that he uses to convince his kids to behave during Christmastime.

Clooney and his wife, Amal Clooney, are parents to 3-year-old twins, Alexander and Ella. During his appearance on "The Late Show with Stephen Colbert" Friday, the 59-year-old actor shared how he keeps his toddlers in check around the holiday season.

"At three years old, you're just trying to keep your kids in line in general so I devised a way to get them to behave during this time," he said.

"When they’re asleep in the morning — they sleep in the same bedroom — they start to make noises and you can hear the two of them getting at each other, and I stand outside the door and I go ‘Oh hi Santa!’ and then you hear Santa is there and he’s like ‘Ho ho ho!’" he explained while making his best Santa impression. "And I say, ‘What are you doing here Santa?’ and he says, ‘Oh, I’m just making sure that the kids are being good kids.’ And you can hear them going, ‘We are Santa! We are!’" 

Clooney concluded, "Then he leaves and they come out and they’re unbelievably well behaved."

The celebrity dad said he doesn't have much trouble making his kids behave during Christmastime. But he joked that he was already worried about Easter because he doesn't know how the Easter bunny sounds.

The "Midnight Sky" actor and his family are in London, and he said he was "desperately trying" not to make his children "little Brits." However, he has been encountering some difficulties while attempting to change the way they talk.

"It’s not a jumper it’s a sweater, it’s not the boot it's the trunk, it's not the pavement it's the sidewalk," the "Ocean's Eleven" star joked.

"I have done everything to try to change their version of speaking with an English accent and so they were writing out their note to Santa and I said, ‘Okay you write your note and then we’re going to leave them cookies and milk, going to leave it right underneath the fireplace.’ And my son goes: ‘No, it’s milk and mince pie,’" he explained.

Meanwhile, Clooney also recently gushed over his wife, Amal,  whom he credits for changing his life. Years before he met the human rights lawyer, Clooney went through a divorce with Talia Balsam, and he thought he would never get married again and have his own family.

"There is no question that having Amal in my life changed everything for me. It was the first time that everything that she did and everything about her was infinitely more important than anything about me," Clooney said. "And then we had these two knuckleheads. It is very fulfilling and something I wasn't at all... didn't see coming."

George, Amal Clooney George and Amal Clooney attend the People's Postcode Lottery Charity Gala at McEwan Hall on March 15, 2019 in Edinburgh, Scotland. Photo: Getty Images/Duncan McGlynn