The feeling I got when I found my first shiny was one of dread. It was a Poochyena, in the route above Oldale town, on the way to battle May. Of course, at this point in the game, you cannot have Pokéballs. There may have been tears.
It would take 7 years and thousands of hours of play time to find my second, a Mincinno on Route 9 in White. Because I was there to catch a Pawniard, I had plenty of Pokéballs. I nicknamed it Mini, EV trained it in Attack and Speed and evolved it, and it is now a staple in my random matchup team. Thank god it had Technician and a Jolly nature.
I don't know how I'd describe the feeling. It was bizarrely similar to the feeling when I found $300 in the gutter. Sheer excitement.
Now, in White 2, I have the shiny charm, and I wonder if the feeling will be the same.
"I completed the National Dex at 12:03am on January 5th, 2013: if Gen VI is announced anytime soon I'm gonna be seriously angry."
January 8th, 2012: Pokémon X and Y announced. Seriously angry.