A mileaholic is someone who is addicted to traveling. Predominately those who have an addiction acquiring points or miles to various travel loyalty programs through airlines or credit card companies.
Jake is always planning his next free trip because he is a mileaholic. We may have to admit him into points rehab or have him attend mileaholic's anonymous
While our lifespan is the number of years we will live, our healthspan is the number of healthy years we will have and our sexspan is is the number of years we will continue to be healthy enough to continue having an active sex life.
A lighthearted reaction upon receiving disappointing news of some sort. Usually something that isn't a particularly a big deal, esp. when it primarily affects someone else - sort of a mild schadenfreude. Sometimes doubled or tripled, and possibly said in a sing-songy voice for added comedic effect to imitate a muted trumpet, which is how the meme originated.