Prince William Says His Children Are a Handful

— -- 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.

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.