There are some aspects to Christmas which cause me to worry about the sanity of the human race. I mean just imagine that a friendly neighbourhood Martian was to pass by and thought he would drop in to introduce himself.
After the common courtesies had been observed he points at the funny man dressed in red, wearing a fake white beard and asks for an explanation. The ensuing conversation might go something like this.
HUMAN: "Well every year we lie to our children and pretend that there is a man called Father Christmas who will visit their house on the night of the 24th December and leave presents for them - but only if they've been good."
MARTIAN: "But how does he travel round the world and visit all of the houses?"
HUMAN: "Ah, well he flies a sleigh through the sky which is pulled along by a group of flying reindeer."
MARTIAN: (Who is developing a rather worried expression) "I see - and your children believe this story?"
HUMAN: "Oh yes and they hang up stockings and leave some food out for the reindeer. They also write letters to him at the North Pole".
MARTIAN: (Who is slowly backing away to reach the safety of his flying saucer). "Well it was lovely meeting you Human. Do drop in when you're in our neighbourhood". (He is now running for his spaceship at full speed).