Talk To Yourself

Go into the darkest room that you can find, one where there's no light at all, and spend a few minutes with your eyes closed. Then, open them up and take a look around. While you'd expect to be staring into pitch-blackness, you'll actually notice that you're seeing a sort of dark gray shade. And that color has a name: It's called "eigengrau."

For the Pizza Lovers.

A Greek-Canadian man invented the "Hawaiian" pizza.

Restaurant owner Sam Panopoulos was born in Greece but moved to Canada when he was 20 years old. And in 1962, the entrepreneur decided to put pineapple on pizza.

Panopoulos, who passed away in 2017, once told the BBC, "We just put it on, just for the fun of it, see how it was going to taste. We were young in the business and we were doing a lot of experiments." The name apparently came from the brand of canned pineapple that Panopoulos used on that fateful day he invented the Hawaiian pizza.

The King of Hearts is the only king in a deck of cards without a mustache.

No number from 1 to 999 includes the letter "a" in its word form.