If I stood there with the winning lotto in my hand, reading and rereading the numbers a million times, I wouldn't believe it at first. I wouldn't want to get excited and have it turn out to be a mistake on my part. So The first thing I'd probably do is calmly go to someone and have them check. Once they confirmed I won I'd probably walk back to my room, sit down for a couple minutes until it sunk in, then start jumping around the room screaming so loud that the police would be called to my house. I'd be in such a state of hysterics that I wouldn't be able to tell them what happened, just wave the lotto ticket in their faces until they figured out what I was screaming about. Then I'd call in to the lotto thingy (what DO you do when you win?) or I guess go to the gas station so they can put it thru the comp that I won, and once I knew that my money was coming I'd call EVERYONE I knew and tell them (and try very hard not to brag, which probably wouldn't work out too well).
Then, I'd take care of my families bills, buy property and begin construction on my PERFECT HOUSE in Sonoma County, surrounded by vineyards. Buy a couple other houses around the country as extras, and begin touring the world- with a bunch of my friends. I'd buy them all hot cars and pay off their bills.
After traveling the entire time my house is built, I'd return and begin finding first class chooks to fill my very big, very fancy, large chicken house thing. And I'd win at every show ever. BWAHAHAHAHA