And (>Cappucino and Senofou) I had never thought about it, but the dialectic 'bor' or 'boy' is very close to 'boer' or 'bauer', Africaans and German for 'farmer' - so the words 'farmer's boy' (in the song) may actually refer to a misunderstood version of what I refer to as a 'binary' word, ie one repeated in a second language 'farmer-bor'. As in 'gate-way'. Which suggests - I think - that two languages were commonly spoken by people who had contact with those who only spoke one of them.
trashin' and threshin' are close enough to be he same word. Interesting!

Someone will tell me I'm totally wrong though!