There is a story I have heard a few times before, and I have not forgotten it. I just found it online:
“A large group of European pastors came to one of D. L. Moody’s Northfield Bible Conferences in Massachusetts in the late 1800s. Following the European custom of the time, each guest put his shoes outside his room to be cleaned by the hall servants overnight. But of course this was America and there were no hall servants.