There before grazing ewe grow rye

The story:

At a restaraunt with my family when the song came on the canned music. I sat singing to myself and really getting into the emotional aspect of this great song. When I got to this line, my older sister and brother just stared at me and asked me to repeat the line. When I repeated it, they busted out laughing and drew the attention of the entire restaraunt. My sister then tried to explain the correct lyrics to me through her gales of laughter. This set of several other tables to laughing as well. For many years afterwards, my family would ask me if I knew any other "farming songs."