This has now gone from the "dog ate my homework" to "I stand by my plagiarized book report."
You just reminded me of a guy in my graduate seminar class who turned in a paper he'd written five years before, as his term project. He didn't even change the cover page; it still had the old date on it.
The professor was livid and wrote a huge red "F" on it. The guy was outraged and stormed out saying he would sue if he didn't get a passing grade.
And this was no kid; this guy was at least thirty-something years old. Too old to NOT know better.
Heheheh.