What does a double rainbow mean? Watch this nature video, and you won't find out. You'll just hear the question asked with a sense of awe—accompanied by healthy scoops of exclamation and crying. It's worth watching anyway.
Special thanks to The Huffington Post for bringing it to our attention.
For more about the YouTube video sensation, check out this background article. For more on what causes double rainbows, check out The Straight Dope. For more on what causes this kind of reaction to double rainbows...we're guessing you probably have some idea.