Inside the daily routine of 87-year-old Warren Buffett, who loves McDonald's, spends 80% of his workday reading, and unwinds by playing the ukulele

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The Oracle of Omaha says he has "no desire to get to work at four in the morning."

Warren Buffett turned 87 Wednesday.

By now, it's probably safe to say Berkshire Hathaway chairman, who's said he has the diet of a 6-year-old and has no interest in getting to work before dawn, has settled on his optimal daily routine.

So what does an average day look like for Buffett, who Forbes estimates is worth $77.7 billion?

Here's what the Oracle of Omaha gets up to all day: