BRK 2019 AGM Highlight: Buffett's most fun investment

Some of the most interesting questions at the Berkshire AGM come from unusual quarters like 10 year old Brook who asked what was the most interesting or fun investment Warren and Charlie ever made. The responses are fascinating - and guaranteed to ensure you never again look at a game farming syndicate the same way.  
* This is one of the highlights from the five hours of Q&A at the 2019 Berkshire Hathaway AGM in Omaha where chairman Warren Buffett and his deputy Charlie Munger field queries from shareholders.