1. George Washington’s teeth weren’t made of wood. The truth was actually much worse.
Washington's dentures were in fact made of animal bone and human teeth. Some records suggest that those teeth came from the mouths of slaves.Wikimedia Commons
2. John Adams' last words are thought to be, "Thomas Jefferson survives."
Adams believed that Jefferson, his great political rival, had outlived him. However, Jefferson himself had actually died just hours earlier. What's more, the date was July 4, 1826, exactly 50 years after the Continental Congress approved the Declaration of Independence. Wikimedia Commons
3. Thomas Jefferson invented the swivel chair, which he sat in while writing the Declaration of Independence. Wikimedia Commons
4. James Madison's face appeared on the $5,000 bill, which the government stopped printing in 1945. Wikimedia Commons
5. James Monroe was the last president that we'll never see a photograph of. He died in 1831, five years after the invention of the photograph but before the new technology had come into widespread use. Every subsequent president, however, was photographed.
Monroe was also the only president, other than George Washington, to run unopposed for reelection.Wikimedia Commons
6. John Quincy Adams started keeping a diary when he was 12. By the time he died, he had written more than 14,000 pages in 51 volumes.
The writings showed, among countless other things, that the sixth president had suffered from depression for most of his life.Wikimedia Commons
7. Andrew Jackson was the target of America's first presidential assassination attempt when Richard Lawrence fired a gun at him from just feet away.
When the gun misfired, Lawrence pulled out a second weapon — which also misfired.
An enraged Jackson charged Lawrence with his cane. Both pistols were later found to be working just fine, which means the odds of them both misfiring were 125,000 to 1. Wikimedia Commons
8. Martin Van Buren's nickname, "Old Kinderhook," (a reference to the village where he was born in New York) is how we got the expression "OK."
He was also the first president to be born in America. Wikimedia Commons
9. William Henry Harrison's supporters handed out booze in log cabin-shaped bottles after a critic called him the "Log Cabin and Hard Cider candidate."
Harrison was the first presidential candidate to actively campaign for the office, drawing crowds of up to 60,000 fans.
Too bad he let them all down by dying after just a month in office. Wikimedia Commons
10. John Tyler, born in 1790, still has two living grandchildren.Wikimedia Commons
11. James K. Polk's wife, Sarah, was such a staunch Presbyterian that music and dancing were banned at Polk's inaugural ball until they left. Wikimedia Commons
12. Zachary Taylor's body was exhumed 141 years after he died (having only served 16 months in office) to make sure he hadn't been poisoned.
They found that he had a normal level of arsenic in his body and concluded that it was cholera contracted from drinking milk on a hot day. Wikimedia Commons
13. A Yale professor once wrote that "to discuss...Millard Fillmore is to overrate [him]."
And with that, we give you no Fillmore facts.
14. Likely America's most obscure president, Franklin Pierce was denied renomination by the Democratic Party.
"There is nothing left to do but get drunk," he told a friend.Wikimedia Commons
15. Some scholars believe that James Buchanan may have been gay.
He is the only president that never married, but he lived for years with Alabama Senator William Rufus King.
This arrangement prompted Andrew Jackson to call the two "Miss Nancy and Aunt Fancy." Wikimedia Commons
16. Abraham Lincoln created the Secret Service hours before he was assassinated.Wikimedia Commons
17. Andrew Johnson escaped indentured servitude.
His mother, alone with the children after their father died, sold him and his brother into servitude, but Johnson eventually ran away to reunite with his mother. Wikimedia Commons
18. The "S" in Ulysses S. Grant's name doesn't stand for anything.
“Find some name beginning with “S” for me,” he joked in a letter to his future wife, Julia Dent. “You know I have an “S” in my name and don’t know what it stands for.”Wikimedia Commons
19. Rutherford B. Hayes was the first president to take the oath at the White House and visit the West Coast.
He was also the first person in America to own a Siamese cat. Bettmann/CORBIS/Getty Images
20. James Garfield's spine, with a clear bullet hole from his 1881 assassination, went on display at the National Museum of Health and Medicine in 2000.
At the time of the attack, Alexander Graham Bell had tried to find and remove the bullet using an early version of a metal detector. Wikimedia Commons
21. Chester Arthur held a White House yard sale, selling $8,000 of history (including Abe Lincoln's pants) to pay for redecorating. Wikimedia Commons
Cleveland is the only president to serve two non-consecutive terms.
So when anyone talks about the 45 presidents, be sure to call them out. We've only had 44.Wikimedia Commons
23. Benjamin Harrison was the grandson of ninth president William Henry Harrison. He is the only US president to be the grandchild of another president.
24. Grover Cleveland is the only president to ever have a wedding ceremony in the White House.
At 21, his wife became the youngest-ever first lady. Wikimedia Commons
25. William McKinley often wore a red carnation on his lapel for good luck.
At the 1901 Pan-American Exposition, he gave his carnation away to a little girl.
Moments later, he was assassinated.Wikimedia Commons
26. Teddy Roosevelt, an avid boxer, was left blind in his left eye following a bout with a young military officer at the White House in 1905.Wikimedia Commons
27. William Howard Taft began the tradition of presidents throwing pitches when he snagged a fly ball at a 1910 Washington Senators game and threw it back onto the field.
At 340 pounds, Taft was also our heaviest president.Wikimedia Commons
28. Woodrow Wilson is the only US president to be buried in Washington D.C. He is interred in a sarcophagus at Washington National Cathedral.
29. Warren G. Harding's scandal-ridden presidency frequently ranks as the worst in American history.
Harding himself once said, "I am not fit for this office and never should have been here."Wikimedia Commons
30. Calvin Coolidge is the only president who was born on the Fourth of July.Wikimedia Commons
31. Herbert Hoover, in order to remain fit while President, invented a sport called “Hooverball” where a medicine ball is thrown over a net by two teams.
The Hooverball championship is held in Hoover’s hometown of West Branch, Iowa every year.
32. Franklin Delano Roosevelt was a lifelong stamp collector who once said "I owe my life to my hobbies—especially stamp collecting." He began collecting stamps when he was bedridden from polio as a child, and continued to for his whole life.Wikimedia Commons
33. Harry S. Truman narrowly avoided an assassination attempt in 1950 when two Puerto Rican nationalists launched an attack. A White House guard died in the process of killing one of the attackers.Wikimedia Commons
34. Dwight Eisenhower removed the White House’s squirrels with extreme prejudice because they were messing up his golfing.
"The next time you see one of those squirrels go near my putting green, take a gun and shoot it!" he told his men. However, the Secret Service opted not to fire guns on White House grounds and instead captured the squirrels and released them in a nearby park.Wikimedia Commons
35. A big James Bond fan, John F. Kennedy tried to write his own spy thriller — about a coup staged by Lyndon Johnson.Wikimedia Commons
36. Lyndon Johnson acted very inappropriately with his very large penis.
Johnson's exploits with the organ he nicknamed "Jumbo" include holding a nude press conference aboard Air Force One, literally waving his penis around in the Capitol bathroom, and urinating in the parking lot of the House Office Building.Wikimedia Commons
37. In 1937, recent law school graduate Richard Nixon applied to be a special agent with the FBI. He never heard back.Wikimedia Commons
38. In college, Gerald Ford turned down offers to play for two NFL teams: the Detroit Lions and the Green Bay Packers. He was an MVP center on his football team at the University of Michigan.
39. Jimmy Carter had a brother, Billy, who released a line of beer called “Billy Beer” to coincide with his brother’s inauguration.
40. Ronald Reagan really, really loved jelly beans.
He began eating them during his California gubernatorial run as a substitute for pipe smoking. Later, when he was president, he kept a jar full of jelly beans on his desk in the Oval Office. Wikimedia Commons
41. George H.W. Bush was once very nearly cannibalized.
While he was a World War II Navy pilot in the Pacific, Bush's plane was shot down by the Japanese. Unlike the eight other men shot down along with him, Bush managed to narrowly escape Japanese capture. The other eight men, however, were tortured and killed by the Japanese — and some of them were eaten.Wikimedia Commons
42. As a young man, Bill Clinton lined the back of his El Camino with astro turf.
“You don’t want to know why,” he once said with a sly grin, “but I did.”Wikimedia Commons
43. George W. Bush was a cheerleader.
During his senior year at Phillips Academy high school, Bush served as head cheerleader.Wikimedia Commons
44. When Barack Obama briefly lived in Indonesia as a child, his family owned a number of unusual pets including numerous alligators, a turtle and an ape named Tata.Wikimedia Commons
45. A satirical magazine once sent checks for 13 cents to some of the world’s richest people as a prank just to see who would cash them. Only two did: A Saudi arms dealer and Donald Trump.Wikimedia Commons