The act of shoving your fist into your girlfriend's ass down to the shoulder, then picking her up and wearing her like a glove, then slamming her to the floor and quickly pulling our your arm in order to rupture her colon, then beating her mercilessly until she is dead. (This will not work with a wife. In addition, you can not have sex with her dead body or your peniswill turn into cabbage.)
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.