Chalk it up to a grandmother's privilege--especially if the grandmother in question happens to be Queen Elizabeth. During her 90th birthday celebration--the official one known as the Trooping the Colour that takes place in June every year--the Queen was caught giving what-to when Prince William did a very dad thing.
The future king of Great Britain crouched down for a second to talk to his son, which made his granny snap: "Stand up, William!" Up popped William, saying, "Sorry." You can even see the whole thing in slo-mo. Watch!