Google Interviews Have Puzzling Questions

What would you answer to these questions?

"You are shrunk to the height of a nickel and your mass is proportionally reduced so as to maintain your original density. You are then thrown into an empty glass blender. The blades will start moving in 60 seconds. What do you do?"

"How would you find out if a machine's stack grows up or down in memory?"

"Explain a database in three sentences to your eight-year-old nephew."

"How many gas stations would you say there are in the United States?"

I know, you will say they are weird and don't know what to say. These are some of the questions from a Google interview and they are quite shocking. If you want to see some answers and an interesting discussion check the original forum and the Digg thread.