Jimmy Kimmel Brings Son Billy On Stage On Monday night, Kimmel surprised the audience with his son Billy, who recently underwent a second heart surgery. He's fine everybody. He may have pooped, but he's fine. He took the time to discuss healthcare and how federal funding has run out for the Children's Health Insurance Program (CHIP). Which means parents of children with cancer and diabetes and heart problems are about to get letters saying their coverage could be cut off next month. Merry Christmas, right? Kimmel then told his audience to congress and speak to their representatives to help fund CHIP.