Octopus, a bowl of ice cream, eight oatmeal biscuits, and a donut.

It's an unusual order, but one you may hear if you went for breakfast with some of the biggest names in the corporate world.

Elon Musk is not only using Twitter to update users on company news, insult Bill Gates, and reveal Tesla projects, he's also giving an insight into his personal life.

More specifically, his breakfast.

Peter Diamandis, one of the founding partners of health care business Fountain Life, tweeted earlier this week that "sugar is poison."

Musk responded: "I eat a donut every morning. Still alive" to which Diamandis responded: "Okay Elon, allow me to be more specific. Sugar is a slooow poison."

The exchange gave an insight into the lifestyle of the SpaceX founder, who was the victim of internet body-shaming when a shirtless image of him on a yacht with talent agency boss Ari Emmanuel went viral.

Musk’s daily doughnut ritual runs parallel to his previous statement on health and nutrition.

In 2020, he told Joe Rogan in a podcast interview, “I’d rather eat tasty food and live a shorter life.”

But Musk is in good company when it comes to big-name CEOs giving in to their sugar cravings.

Warren Buffett

Now into his nineties, Buffett has always had a weakness for sweet foods. In 2015 he told Fortune he was "one-quarter Coca-Cola," saying he drinks at least five 12-ounce servings every day. Buffett has 400 million shares in the fizzy drink brand through his company, Berkshire Hathaway, and even lent his likeness to the cans on sale in China in a bid to boost sales.

His first Coke of the five cans he drinks a day is consumed with a tub of "potato stix" shoestring snacks, though the man worth $106 billion sometimes likes to switch up his routine by substituting a bowl of ice cream for the crisps.

Microsoft cofounder Bill Gates, Buffett's friend and fellow billionaire, revealed that the rest of the veteran investor's diet largely comprises McDonald's hamburgers—a brand Buffett also has a stake in—and snacks like Oreos.