I went to West Salem once when I was younger. We went to the famous "House of the & Gables". I remember going into one of the rooms that had a spinning wheel. The tour guide said that the song "pop goes the Weasel" was talking about the way people spin yarn. She was saying that when they'd spin yarn, there was something that they'd do that would present a popping sound.
Anyway, I got my plug in for West Salem. It was fun!