Staying out all night and hibernating all day. This lifestyle is usually associated with 7 day alcohol binges, where one stays out all night partying and sleeps all day in their dark room avoiding the sun. Another example is when students can be found staying up all night studying in the library and crashing all day long during finals week. The word is derived from the habits of vampires who come out at night and avoid the daylight sun at all costs.
Nate: Where is Mike, he hasn't been over in like three days
Derek: Mike is on that VampireLife I haven't seen him out during the day for the last week, you catch him at Happy Hour on Main Street though, just wait for sun down.
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.