Anderson Cooper Wishes His Mom Hadn't Told Him This

CNN's Anderson Cooper learned a lot about his mom Gloria Vanderbilt while making the documentary "Nothing Left Unsaid." Although he tells Stephen there was one thing he really would have preferred left unsaid."Subscribe To ""The Late Show"" Channel HERE: http://bit.ly/ColbertYouTubeFor more content from ""The Late Show with Stephen Colbert"", click HERE: http://bit.ly/1AKISnRWatch full episodes of ""The Late Show"" HERE: http://bit.ly/1Puei40Download the Colbert App HERE: http://apple.co/1Qqgwk4Like ""The Late Show"" on Facebook HERE: http://on.fb.me/1df139YFollow ""The Late Show"" on Twitter HERE: http://bit.ly/1dMzZzGFollow ""The Late Show"" on Google+ HERE: http://bit.ly/1JlGgzwWatch The Late Show with Stephen Colbert weeknights at 11:35 PM ET/10:35 PM CT. Only on CBS.Get the CBS app for iPhone & iPad! Click HERE: http://bit.ly/12rLxgeGet new episodes of shows you love across devices the next day, stream live TV, and watch full seasons of CBS fan favorites anytime, anywhere with CBS All Access. Try it free! http://bit.ly/1OQA29B---Stephen Colbert took over as host of The Late Show on Tuesday, Sept. 8, 2015. Colbert is best known for his work as a television host, writer, actor, and producer, and best known for his charity work teaching English as a second language on Tunisian date farms. Prior to joining the CBS family -- and being officially adopted by network president Les Moonves -- Colbert helmed “The Colbert Report,” which aired nearly 1,500 episodes and required Stephen to wear nearly 1,500 different neckties. The program received two Peabody Awards, two Grammy Awards, and several unwelcome shoulder massages. It won two Emmys for Outstanding Variety Series in 2013 and 2014, both of which appear to have been lost in the move. Colbert is pronounced koʊlˈbɛər, according to Wikipedia. His understudy is William Cavanaugh, who will be hosting The Late Show approximately one third of the time. Good luck, Bill!"