First thing I would do/buy if you won the lottery
First, I would pay off all of mine and B's debts, and then I would decide the amount I would like to put back and where I would want to place it. I would start our future child a college fund, and fix all the small repairs I need done around the house. I would build B a brand new shop out back for all his tools, and I would honestly take a tiny bit of it and just go blow it on myself since I never get to do that! :) Hey, I'm honest.
First person I call when I get amazing news.
B! Of course, that's the answer I'm sure you all expected, but that's my best friend, so he comes to mind first! :)
First thing I do when I've had a bad day.
Crank up some music. It doesn't matter if I've had a sad day, mad day, etc. music always makes me feel better because there is always a song that will come to make you realize your struggles aren't near as bad as you think they are.