In horse racing, a horse is carted away from the track because it couldn't finish the race due to injury and is unable to walk on its own.
For humans:
To be physically carried from a bar or party by friends, bouncers, local authorities, and/or random people because of great intoxication and the inability to walk. Person is then placed into a vehicle and driven away.
To be taken away in a police van from a party, bar, or for general hell raising.
I had to be vanned off last night after drinking20 shots and passing out on the hotel lobby floor.
The act of obtaining candy then being fucked in ass figuratively or literally, more often then not without consent from the victim being "White Vanned."
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.