You don't need a stethoscope to enjoy this one. Medicine isn't always all needles and charts; it can have a sense of humor from time to time. Doctors and nurses use some wild expressions that might sound like something out of a sitcom. Here's a lighthearted look at 16 real phrases from the medical world that are as funny as they are fascinating. Let's take a peek behind the curtain at what health pros are really saying.