Someone who is awake all night gaming, then sleeps in the morning or later that day. In competitive games the average night timeplayer is usually more dedicated and of a higher skill level than the average during the day, making ranked play at night a more risky and difficult prospect.
"Jim: Yea, we had like 10 ranked games, but we played in the middle of the night when all the vampires were out so it was pretty rough going.
Jimbo: Yea man, gaming vampires can be prettysweaty."
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.