In a recent public appearance, Prince William made a light-hearted joke about having more children with his wife, Kate Middleton. The couple already has three children, so the remark was met with amusement by onlookers. The Duke of Cambridge's comment highlights the couple's close bond and sense of humor, despite the pressures of their royal duties. 

The royal couple has been open about their experiences as parents and the challenges they face, but they always maintain a positive outlook. The joke also hints at the possibility of the couple expanding their family in the future. Overall, Prince William's playful banter with Kate Middleton shows their strong relationship and good sense of humor in the midst of their public roles as members of the royal family.