I'm more of a shoe box guy. If I make some money I put it in the shoe box. If I need something I grab some money out of the shoe box. So I don't really understand who it is our country has borrowed money from, or how that works when we are just making more money(I've even read that is actually an urban legend). Do we have to pay the money back at some point? Does our lender even care? Because I don't think we can pay it back. There's nothing in the shoe box.