What's the proper etiquette for pumping gas?

I’m surprised a couple of enterprising, mechanical types such as yourselves had no experience with this method of getting gas during your formative years. I grew up on the Iron Range of Northern Minnesota in the 60’s, when a carload of teenagers could only come up with $1.30 among them. After burning through that during a night of cruising the main street of Hibbing, Mn, we would often pull into several closed gas stations to drain all the hoses. The only downside was when a carload of kids had beat us to it.