Flat Earther: Globeheads, they are religious zealots with no concept of the scientific method, going to university to learn that the universe is real, without doing the research to check it out.
Globehead: Gravity is real, they have detected gravity waves, you clearly have no concept of reality.
Flat Earther: Did you learn that from someone in a position of authority, or did you do your own empirical research to come to that conclusion, good little Globehead, remember to never question your beliefs.
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.