I came across this fun story about Iceland's Terrifying Christmas Tradition over @ The Lineup and thought you might get a kick out of it too!
13 Evil Yule Lads
This link spells out each Yule Lad more clearly
And for lots more Scary Christmas Legends around the globe check this out!
On that note...
Have yourself a Merry Little Christmas! but keep an eye out for what lurks behind!