( CNN ) -- He played the ukelele , weighed in on the Obamacare debacle and even flashed his prehistoric flip cell phone . Suffice it to say , we got to see another side of Warren Buffett during an interview with Piers Morgan Tuesday night . Accompanied by his son and grandson , the billionaire investor gave his unique take on almost everything . And with that , he let Morgan and American take a quick peek in his wallet . Literally . Here are some of the highlights . On Obamacare and Kathleen Sebelius . Buffett has in the past supported President Barack Obama . And it seems that this support extends to embattled U.S. Secretary of Health and Human Services Kathleen Sebelius . Buffett says give Sebelius some time to fix the Obamacare mess she is overseeing . `` I am a friend of Kathleen 's . And I 'm a friend of her when she 's in trouble . I like Kathleen . I feel sorry for her in the position she 's in . Obviously , it 's a huge screw up but it will get worked out , `` Warren Buffet told Piers Morgan . On technology . Can you tell a lot about the wealth of a man from his cell phone ? Apparently not when it comes to the 83-year-old financial guru . `` This is the one Alexander Graham Bell gave me , '' joked Buffett , as he revealed a Nokia flip phone , a relic compared to today 's smartphones . `` I do n't throw anything away until I 've had it 20 or 25 years . '' By the way , Buffett 's son , Howard Graham Buffett , did not bring a phone to the interview . And grandson Howard Warren Buffett led the three generations when it came to technology . He had two Blackberries . Buffett 's standoffish approach to technology extends to e-mail . `` I sent one e-mail in my life , '' revealed Warren Buffett . `` I sent it to Jeff Raikes at Microsoft and it ended up in court in Minneapolis , so I am one for one . '' On his biggest mistake . When you are one of the richest people in the world , it is hard to say you made many mistakes . Buffett listed one . `` I bought a company in the mid-90s called Dexter Shoe and paid $ 400 million for it , '' Buffett said . `` And it went to zero . And I gave about $ 400 million worth of Berkshire stock , which is probably now worth $ 400 billion . But I 've made lots of dumb decisions . That 's part of the game . '' On his wallet . Buffett says he has been carrying the same wallet for 20 years . And when Morgan asked Buffett to show America what is inside , he obliged . He whipped out the black wallet for a split second . If you blinked you missed it . The highlights : A family picture . A wad of hundreds . And an American Express card from 1964 . `` It goes with the cell phone , '' Buffett joked about the almost 50-year-old credit card . On the shutdown showdown . At least one part of the recent battle between Democrats and Republicans that caused a 16-day government shutdown should never happen again , Buffett says . The battle should not take place around whether to raise the debt ceiling limit , he said . It could be catastrophic to the economy . `` I think that both parties should declare the debt limit as a political weapon of mass destruction which ca n't be used , '' he said . `` I mean , it is silly to have a country that has 237 years building up its reputation and then have people threaten to tear it down because they 're not getting some other matter . '' On investment . Who would n't ask the `` Oracle of Omaha , '' who made his fortune investing , for a stock tip ? Fans watching the interview needled Morgan via Twitter to ask the Nebraska billionaire how he would invest $ 1,000 right now . Buffett 's answer : `` Well you asked , '' he coyly told Morgan . `` You 've done your job . '' It seems investment advice does n't come easy . `` I ca n't even get an answer to that question , '' Howard Graham Buffett joked . Watch Piers Morgan Live weeknights 9 p.m . ET . For the latest from Piers Morgan click here .
Warren Buffett is one of the richest men in the world . During an interview he offered opinions on Obamacare and the government shutdown . He also gave a peek at what is in his wallet : a wad of $ 100 bills . No smartphone for Sage of Omaha ; he uses an old flip cell phone .