Warren Buffett's much-watched Berkshire Hathaway announced an increase in profits Friday. But some investors were interested in the Oracle of Omaha's shareholder letter not for money advice, but to get a taste of Buffett's trademark humor. The billionaire didn’t fail to deliver. He had a laugher on country music: "Sing a country song in reverse, and you will quickly recover your car, house, and wife." Buffett went for the kill with this doozy relating to his investment in Geico: "An old Wall Street joke gets close to our experience... Customer: Thanks for putting me in XYZ stock at 5. I hear it’s up to 18. Broker: Yes, and that’s just the beginning. In fact, the company is doing so well now, that it’s an even better buy at 18 than it was when you made your purchase. Customer: Damn, I knew I should have waited."