"jake: did you know that crabs is spelled with a "c" and not a "k"?  joe: thank you, captain obvious and the world of yesterday
someone who's so dumb it's frightening
""jake: did you know that crabs is spelled with a "c" and not a "k"?  joe: thank you, captain obvious and the world of yesterday" What is the definition of "captain obvious and the world of yesterday"?