The opposite of procrastinating. Doing things that you need to get done as early as possible in order to free up time for future shenanigans, tom foolery, and lollygagging.
Paul was concrastinating his essay due on friday because he knew there was a ripper at ski house thursday night, and he wanted to rage!
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.