RB: I realized you were pointing out the spelling mistake - I just found the correct(?) etymology interesting: "high day", "heyda", "hey hey", etc.

When you said Amish, I thought of the 19th century German spoken by Amish types rather than of the farming lifestyle. Having spent many summers of my youth making hay, I don't associate it with the Amish moreso than with any other farming culture.

That's what you get for trying to be witty!