Reminds me of the Twilight Zone episode where the aliens visit Earth and someone on Earth snags a book from them with the title "To Serve Man." The rest of the book is written in the alien language. Everyone is excited because they think it means "we are here to serve you to make your lives better." At the end of the episode someone figures out the book is a recipe book about how to cook humans. If you look around the table and don't know who the mark is it's probably you.