Believe it or not, we have had a president that fulfilled every one of his campaign promises. Read on for some fun fast facts about former leaders of the free world.

An orphan, dog-lover, Stanford grad and engineer, Herbert Hoover (1929-1933) decided that he would never take money for performing a public service. When he became president, he was required by law to accept a salary but donated the entire sum to charity. We heart him.

John Quincy Adams, skinny dipper

John Quincy Adams (1825-1829) was all about self-improvement and enjoyed 5am swims in the icy Potomac River. He became the first president to be interviewed by a woman, thanks to a female journalist’s knowledge that he swam naked. She showed up one morning and sat on his clothes until she had an interview.

James K. Polk (1845-1849) did every last thing he said he would do, if elected. He settled a dispute with Britain over the Oregon territory, established a sub-treasury, acquired California from Mexico, and lowered tariffs. He did it all within one term, then retired – talk about efficient!

George Washington's not-so-pearly whites

Here's one last tidbit for you - contrary to popular belief, George Washington never wore wooden dentures. However, he did have dentures made of human teeth, ivory, and animal teeth... ick!

Learn more about all 43 (yes,43!) U.S. Presidents at nps.gov.

For a more scandalous look at our presidents, check out the tabloid-esque Secret Lives of the U.S. Presidents: What Your Teachers Never Told You About the Men of the White House.