Prince William Says His Children Are a Handful

PHOTO:This photo released by Kensington Palace on Dec. 18, 2015 shows The Duke and Duchess of Cambridge with their two children, Prince George and Princess Charlotte, in a photograph taken late October 2015 at Kensington Palace in London.PlayChris Jelf/Kensington Palace/Getty Images
WATCH New Role for Princess Kate

Prince William believes fatherhood may be his toughest role yet.

Speaking to guests at the Welsh Rugby Charitable Trust Friday, which he is patron, Prince William joked about his rambunctious children, Prince George and Princess Charlotte.

"No broken bones yet but they're trying. Running around, pushing things, jumping," he said. "Please tell me it gets easier."

Like any proud father, William gushed about his 10-month-old daughter.

"Charlotte is very easy, very sweet but all the fathers say, 'Just you wait. When they get to 9, 10, 11, they go crazy,'" he said.

PHOTO: This undated photo released Nov. 29, 2015, by Britains Duke and Duchess of Cambridge, shows Princess Charlotte with her cuddly toy dog, at Anmer Hall in Sandringham, England.HRH The Duchess of Cambridge via AP
This undated photo released Nov. 29, 2015, by Britain's Duke and Duchess of Cambridge, shows Princess Charlotte with her cuddly toy dog, at Anmer Hall in Sandringham, England.

So William is preparing himself.

"I'm looking forward to it," he said. "There will be some drama."

The Duke and Duchess of Cambridge will be heading to India and Bhutan next month on behalf of Her Majesty without their two children. Princess Charlotte celebrate her first birthday in early May.