Two years ago, my wife and I sat at a long conference table in a mortgage-title office in Bethesda. Sitting next to us: our real estate agent, who drew up our bid on a townhouse in Germantown two days after showing it to us. We didn't get an inspection, and I don't recall going back for a second look. We had to act fast or someone else would get it. Our bid won the house -- our very own first home -- and now we had to close the deal. The owners sat across the table. They seemed more nervous...