Because the folks at the Huffington Post says it better than I can, and because I am laughing so hard I can't think for myself:
This guy really likes rainbows. I mean REALLY likes them. Then again, if I was some hiker dude (probably on mushrooms) and I saw a FULL DOUBLE rainbow, I'd probably enter crazypants mode as well. Watch as YouTube user Hungrybear9562 (amazing) goes through an intense emotional cycle, starting with "Woahs" and "Oh my Gods" and leading to crying, laughing, and wistfully asking the sky, "WHAT DOES THIS MEAN?" It's so hilariously awkward that by the end of the 3 minutes you'll be laughing and crying along with him.
Rainbows, unicorns and TGIF, y'all!