Think about all the BIG things that have happened in your life. You can usually remember where you were when it happened. Where were you for the Dress? Today is the 10th anniversary of "The Dress". This is the dress where people thought was white-and-gold. But it was really blue-and-black. Hard to believe but it went viral on Tumblr February 26th, 2015. Then it "broke the internet" that night after BuzzFeed ran a poll. Two-thirds of people saw white-and-gold. And if you're one of them, it's probably still what you see. It's an optical illusion caused by weird lighting and an overexposed background. People tracked down more photos online and proved the "white" was really navy blue, and the "gold" people thought they saw was black. So, if you're a white-and-gold person . . . you're still wrong.
(Here's the original photo. Some people can see both versions. If you see white-and-gold, try looking at it out the side of your eye, not directly.)