To be sleighed is to be immeasurably drunk on Christmas Eve, so much so that you are either still drunk Christmas Day or are massively hung over. The same as "wasted" or "shit-faced" but used specifically on the Christmas Holiday. This term can also be used post-Christmas if one is wasted Christmas Day and continues into Boxing Day.
This is often seen in "mall Santas" after they finish thier final day on the 24th.
Guy 1: "Whoa, did you see that mall santa tossing his guts under that tree?"
Guy 2: "Yeah, he's totally sleighed!"
Example 2
Santa: Whooaaa there Rudolph, I said leeeeft.... hold up I gotta ho ho ho hurl! *blargh*
Rudolph: Good graces Santa! Your F*cking Sleighed!
To give a simple task to someone highly over-qualified - originally finding the best percussionist available to play sleighbells in the chorus of a Christmas song.
Have you seen Jay's art? He's too good to be painting sets. I see some sleighbelling going on...
Jay's been sleighbelling with the choir again. He's a Grade 8 and they get him on a part that a toddler could play.
Created in 2010 by Jevastus Destinus, this "word" means someone that doesn't have the slightest fucking idea what they're talking about, but they're talking anyways.
Jevastus: Yo, you're a fag. I hope you knew that. :-)
Idiot: Umm.... no I didn't. But thanks anyways.
Jevastus: Yes you did, you fucking I-don't-have-the-slightest-fucking-idea-what-I'm-talking-about-but-I'm-opening-my-fucking-mouth-anyways-^_^ fag. :-)
a.) guy: dude i totally sleighed that guy at tekken 3!
b.) girl: oh tamara, you were so funny on the netball pitch when you kept dropping the ball! you sleigh me! hahaha!