In college, I had to write a story about the Pelops, an ancient Greek 
who started the Olympics (as one myth tells it). I get to studying, 
there's not much on Wikipedia, but I find some good books and get the 
job done. A week after turning in the paper, I get an email from the 
professor saying I plagiarized the whole thing off Wikipedia. The thing 
was I had updated the Wikipedia page and was caught plagiarizing myself. 
I just showed him my work and was let off the hook