A sarcastic joke which is positively intended, and is mainly used to flirt with the recipient of the joke by using certain information about the recipient that is known to the originator of the joke.
Boy: I’m leaving on a trip tomorrow. Let’s meet when I’m back.
Girl: Oh, where are you heading to?
Boy: Mauritius*, wanna come along?
Girl: Flirtcasm, huh?
*the girl is from Mauritius
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.