Simon Cowell is sitting down with Oprah for her The Oprah Winfrey Show airing tomorrow. The 50-year-old American Idol judge is sharing a cup of tea with Lady O and discussing kids.

When asked if there's going to be little Simons running around soon, he tells Oprah, "I worry about that because of my age."

As for whether he has the patience to be the father that he'd like to be, Cowell jokes, "If they could be born at the age of 5."

During tomorrow's show, Simon also discusses his Idol replacement, The X Factor and working with Ellen DeGeneres.