At fifty million i can piece off five friends a million dollars yeah. At a billion everyone's getting ten like why not it you can never spend all of that money. You must have any balance the first barrier that's gone for you is travel is wide open then with your billion dollars there are so many things to do. If I Had A Billion Dollars: An Idea For The World By David Walliams, published by Simon & Schuster at £12.99 (p&p). To order an autographed copy on request call MailOnline UK on 08457 90 90 90 or visit www.samuelwalliams.co.uk.