I really don't get what everyone is fussing about. Richie was being himself and friendly. The host is the son of Jimmy Barnes and they obviously have some history so it was a friendly chat.

Not all Richie's jokes are funny and he tries too hard but it was all in good fun. If you want to see an awkward joke, look at the interview Jon and Richie did with Conan in 2003.

http://www.youtube.com/v/RkNjW39RnAU
It starts at 4:40 and even Jon joins in with his comment. How is that any different?