Once upon a time, Santa Clause had very bad year.
First, elves went on strike. Then deers run away. Finally, sleigh broke at Dec 24.
Elves don't care, of course. It's all Santa's responsibility
By sheer determination, Santa fixed everything, and decided to have a drink for the road.
Just when he was pouring, door bell rang.
Santa ( who was a nervous wreck by that time ) dropped bottle of his precious brandy, opened the door.
Angel came in : "God wishes you Merry Christmas, and sends this spruce tree"
Guess what Santa did with this tree .....
That's right. That's why people put angel on top of the Christmas tree.