You joke, but I'm almost positive this would work.

I had a colleague many years ago who, while in business school, would frequently use speeches or emails from our CEO as the backbone of his essays, sometimes using them almost verbatim. I asked him once if he was worried about getting caught for plagiarism. His response was something along the lines of, "All executive communication is so much meaningless boilerplate corporate-speak that it's next to impossible to tell once person's work from the next". He eventually got his MBA and never did get called out for plagiarism.