Born on the big day
The joy of meeting up with friends, making up with foes and kissing under the mistletoe reaches such a peak of silliness and fun that it is enough to make some people wear the worst jumpers known to humanity or burst into song at the drop of a silly hat.
The day itself is all about the children, of course, and the pleasure they get from opening their presents, removing the actual toy that cost Santa a bomb and spending the day playing with the boxes.