And You Thought You Knew Everything About Warren Buffett

We all know Berkshire Hathaway (BRK.A) (BRK.B) titan Warren Buffett as the Oracle of Omaha. But the man behind the billions isn't your run-of-the-mill 87-year-old mega-rich investor.

Here 10 things you probably never knew about Warren Buffett. But a disclaimer -- deciding on multi-million-dollar investments during bath time does not a billionaire make.

Buffett isn't the your-run-of-the-mill mega-rich investor.

1. He started investing early on
1. He started investing early on

Warren Buffett began investing at age 11 after a visit with a trader from the New York Stock Exchange in the Big Apple. He earned cash delivering newspapers, invested it in equities and had a net worth of around $53,000 by the time he was 16 years old.

2. No diet, no problems
2. No diet, no problems

Buffett has a penchant for junk food and eats just about whatever he wants. He told CNBC's Squawk Box that he has to consume about 2,500 calories per day to maintain his weight, and he fills those 2,500 with whatever his heart desires. Buffett has told reporters his favorite meal is a cheeseburger and a Coca-Cola Co. (KO)  Cherry Coke.

3. This is his third-smartest investment
3. This is his third-smartest investment

Buffett's Omaha home is the only one he lives in - no portfolio of real estate for this mogul. He paid $31,500 for the five-bedroom, 6,570 square footer in 1958, or about $250,000 in today's dollars. Buffett's house is now worth as much as $652,619, according to Realtor.com. Buffett called the house the third-best investment he's ever made, after two wedding rings.

4. Shoes weren't a smart investment
4. Shoes weren't a smart investment

In a shareholder letter in 2008, Buffett told investors the worst deal he ever made wasn't now-defunct Salomon Brothers, but rather Dexter Shoe Co. Buffett paid $443 million for the Maine-based company in 1993, but it had gone under by 2001.

5. Giving back is at the top of his list
5. Giving back is at the top of his list

Buffett has donated about $25 billion to charity in his life, with a great deal going to Microsoft Corp. (MSFT) founder Bill Gates' and his wife Melinda's Gates Foundation. 

Buffett plans to donate 99% of his wealth before his death - and he's started a pledge to get other mega-rich business titans to join him. The Giving Pledge has earned signatures from 137 ultra-wealthy names, including Groupon (GRPN) founder Brad Keywell, Epic (EPOR) founder Judy Faulkner, Spanx founder Sara Blakely and legendary activist investor Bill Ackman.

6. He's not much for vacation real estate, either
6. He's not much for vacation real estate, either

Buffett owned one vacation home in Laguna Beach, California, until 2005 when he sold it for $5.45 million. The home is a four-bedroom, four-bath on a private cul-de-sac on the Pacific Coast Highway.

7. He's a penny pincher
7. He's a penny pincher

Warren Buffett is notoriously frugal, but he can afford any car he wants. He traded in a General Motors (GM) 2006 Cadillac DTS to purchase a 2014 Cadillac XTS in the summer of 2014.

8. Bath time means big returns
8. Bath time means big returns

He weighs investment options in the bathtub, he told CNBC. That's where he decided to invest $5 billion in Bank of America (BAC) in 2011.

9. He was a late bloomer
9. He was a late bloomer

Over 99% of Buffett's wealth was accumulated after his 50th birthday. At age 49, he was worth about $300 million, according to the Motley Fool. Today, Forbes says Buffett is worth $76 billion.

10. 'Warren is in the house'
10. 'Warren is in the house'

Buffet is turning 87 years old today, but he joined Twitter (TWTR) in April of 2013. His first tweet? "Warren is in the house." It was retweeted 42,000 times.

Warren is in the house.

— Warren Buffett (@WarrenBuffett) May 2, 2013

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