One might see pairs of lines of words hung up on either side of doors around this time of year. They're supposed to be couplets. The link below shows one I saw today. Is it a couplet?
OK, so I'll give you that it isn't a couplet. The question is why.
Quiz: Name one thing wrong with this "couplet."
Extra credit: Name all things wrong with this "couplet."
Extra extra credit: Write an acceptable left line for the right line "延年益壽開泰運."