When someone jumps in on a joke or a piss-take and trys to add to it or take it over. Normally a sad person who has no life or the usual cunt who just needs attention that othwise he/she would goun-noticed.
1st person: Hey did you hear the one about...etc,etc
Sad lonely cunt: Haha yeh ive heard this (then trys to take over joke or adds to it.
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.