Martha, I grew up with one of those too! I can recall standing in line with my brothers, father, and neighbors. It strikes me as very gross now. We had a hydrant there too - to hose off the 5 buckle overshoes (remember those?). Then we'd all troop in and eat. On the farm we had 5 meals per day in this order:
6:00 AM "breakfast" (large meal with bacon eggs, etc.)
9:00 AM "coffee" (coffee, sandwiches, cake, etc.)
12:00 "dinner" (roasts, potatoes, gravy, hot veg.)
3:00 PM "lunch" (sandwiches, cookies, lemonade, etc.)
7:00 PM "supper" (same fare as dinner)
And I was never overweight! Anyway, getting back to the topic, coming from a background with a manure scraper at the back door, we never wear shoes in the house now. I think someone who experienced a manure scraper just views shoes differently.