A joke made by a guest on Sunrise has caused host David 'Kochie' Koch, 65, to react with horror on Tuesday. The ill-advised gag, delivered by Seven newsreader Rob Ovadia, even caused another guest, Deborah Clay, to hide her face in her hands. Shook: A joke made by a guest on Sunrise has caused host David 'Kochie' Koch, 65, to …