Bill Gates has an estimated net worth of $81 billion and has spent the previous 23 years at the top of Forbes’ wealthy list, yet he has basic tastes.

The Daily Telegraph claimed Friday that Microsoft billionaire Bill Gates eats McDonald’s Big Macs during business meetings and stocks Diet Coke in his hotel rooms.

“If you get the lunchtime slot with Bill, you’re eating burgers,” Joe Cerrell, a managing director at the Bill & Melinda Gates Foundation, told the newspaper.

“Someone will always be sent to get bags of McDonald’s. I don’t think Melinda [Gates’ wife] lets him have them at home,” he revealed.

‘With Bill you really do have to know your stuff,’ Cerrell said, adding that Gates can be ‘pretty impatient.’

‘It’s like briefing the smartest guy in the room. ‘

‘He can get very frustrated if he thinks his time has been wasted. He’s very funny too – absolutely not arrogant. But our days are pretty structured.’

According to the UK Guardian, the 60-year-old software magnate has a McDonald’s Gold Card, which entitles him to limitless free fast food.

When it comes to changing the world, though, no subject is too tiny or too large to hold his interest. For example, he is so fascinated with hens and their ability to feed the needy that he recently spoke at a conference with a coop full of them.

He is evasive when it comes to the practicalities of chicken husbandry. ‘I’m very much the product of an urban upbringing. Once, in high school, we went to someone’s farm and had to **** the chickens to eat them. I was like: “This is ****. Somebody actually has to choke these things. Oh my God! Why am I being asked to do it?” Then, when we were in Africa, somebody sacrificed a goat, and we sat and watched them skin it.’

His hectic schedule irritates his wife, Melinda, according to reports.

“Well, there’s the question of sorting out the calendar. We have so many things to do, and that’s always a challenge,” Gates explained.

“And I’m a night person. If I have a good book, or I’m doing something on the computer, I have a tendency to stay up. I never tell Melinda I’m tired the next day or she’ll say it’s all my fault, but she can often tell. I’ll try to be energetic, and she’ll say, “You stayed up too late again,” he said.