Prince William called his eldest son with Kate Middleton, Prince George, a rascal.

Princess Charlotte made headlines a few weeks ago for cheekily sticking her tongue out. It turned out that her big brother, Prince George, is as cheeky as her.

In 2013, Prince William talked about Prince George and his kid reminded him of Prince Harry and himself, when he was a kid.

“[George] is a little bit of a rascal, I'll put it that way,” Prince William said. “He either reminds me of my brother or me when I was younger, I'm not sure, but he's doing very well at the moment. He is a fighter. He kind of, he wriggles around quite a lot. And he doesn't want to go to sleep that much, which is a little bit of a problem.”

Prince William became a first-time dad when he and Middleton welcomed Prince George six years ago. He admitted that prior to his son’s arrival he practiced how to secure a baby’s car seat in the back seat. However, when it was time for him to do it with Prince George, he was terrified that something might not turn right.

“Believe, me it wasn’t my first time,” Prince William said about securing his son’s seat on the back of the vehicle.

“I know there’s been some speculation about that. I had to practice, I really did. I was terrified it was going to fall off or the door wasn’t going to close properly.”

Prince William and Middleton are very protective of their children. In fact, the Duke and Duchess of Cambridge haven’t told their son yet about his future role in the monarchy. Prince George is third-in-line to the throne and will be the next king after his father, Prince William.

The Duke of Cambridge said that they haven’t told Prince George yet that he will be king someday because they don’t feel that it’s the right time yet. At the moment, they only wanted to keep him secure and give him a stable environment around him and to shower him with as much love as they can.

Prince William and Prince George
Pictured: Prince William and Prince George at a children's party for Military families during the Royal Tour of Canada on Sept. 29, 2016 in Victoria, Canada. Getty Images/Chris Jackson