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Prince Charles, Prince George, Princess Charlotte

Hagen Hopkins/Getty Images, Chris Jelf /Kensington Palace via Getty Images

Does the man who is next in line to become King of England dare change diapers? Surely, you jest.

British TV hosting duo Ant and Dec did not, at all, when they asked Prince Charles, 67, if he has helped son Prince William, 33, and daughter-in-law Kate Middleton, 33, with this less-than-glamorous task when it came to their children, Princess Charlotte, who is 7 months, and Prince George, 2.

In the ITV documentary When Ant and Dec Met the Prince: 40 Years of the Prince's Trust, Charles told them he has so far avoided changing their diapers but that he is thankful to have them "to look after me when I'm tottering about," according to the U.K. newspaper The Telegraph.

Prince William, Prince Harry

Chris Jackson/Getty Images

Like other members of his royal family, Charles, the son of Queen Elizabeth II and the subject of the 90-minute program, rarely gives interviews. The documentary also features William and his younger son, Prince Harry, 31, who talk about their father's habit of "rabbiting on," The Telegraph reported.

William recalls a time the special effects malfunctioned while he starred in a school production, spurring Charles and Prince Philip, his now-94-year-old father, to "guffaw." He added that it is a trait of the royal family to find it amusing "when things go wrong," The Telegraph said.

The documentary is set to air on ITV on Jan. 4.