Things you know that make people think, 'Why do you even know that?'

[Ado]

It doesn't have to be something nobody else knows if it's interesting.
I, for instance know that the Platypus has 52 chromosomes.

[Allie Maier]

The first man to cross America (Pacific to Atlantic Ocean) in an automobile was Horatio Nelso Jackson. He did it in 1903 and his car is displayed at the Smithsonian. He was one of the most romantic people I've ever watched a documentary on. (I also highly recommend the documentary, called Horatio's Drive: America's First Road Trip).

[Frida Backman]

The giant turtle didn't get a scientific name until 300 years after it was first discovered. Because the people who was supposed to get it always ended up eating it before they returned. 

The first mother to give birth with anesthesia named her daughter Anesthesia (a pun on Anastasia) 

[Frida Backman]

Americans are in China known as "Lovely country people" and British are "Hero country people" 

One of the most popular attractions on an amusement park which name I have forgotten where the incubators with real live premature babies in them. 

[Lindsay H]

WD40 is so named because it was the 40th attempt to get it right.

[Anders Nielsen]

you are three times more likely to be killed in a car accident on the way to get a lottery ticket as you are to win it. think about it, is it worth it ?

[AimlessWander (Sarah)]

Well, I remember my whole class giving me WTF looks when I answered my biology teacher's question on: Which widely famous family has a long history of hemophilia?

As any Whovian knows, it's the Royal Family.

I guess on this site it's a pretty known fact.

In the real world, friends, it is not.

Also, the dot over the letter “i” is called a tittle. :)

[zach hanna]

I read somewhere that the barnacle has the largest penis in relation to its size.

[Ryan Davison]

A "googolplex" (that big freaking number you may have used when you were a little kid) is a real number and represents 10^10^100. It is called a googolplex because mathematician Edward Kasner let his 9 year old nephew name his big new number. 

[Eystein,]

Google is supposedly a misspelling of the number googol, which is odd because it's easier to associate it with goggles, which would also make more sense...

[Katrina]

The length from your elbow to your wrist is the size of your foot.

[Delstein]

I know such obscure facts as the highest point in Suriname, and that it has a surprisingly large Indian immigrant population.

[Eystein,]

If we replaced the Sun with the biggest known star in the universe, then Uranus would be the first planet orbiting it.