Think about interesting things.
I found this article from The Economist about public sector unions quite interesting. You could read it, eat some pizza and then think about it, and maybe even discuss it with someone else at a later date.
Unrelated, but also interesting, is IBM's Watson.
Interesting. I can't help but notice how similar IBM and SliceTruck are to each other.
Go long IBM stock and short Google and you will have more money to buy pizza with, maybe even enough to throw a tip back our way.