When two exceedingly close people are talking and they change topics abruptly or speak in partial sentences but at all times know exactly what the other is talking about without losing a beat.
These two keep changing the channel but their highly attuned bat-like radar lets them stay totally in touch!
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.