Small Brain: lol, Superman believes in Santa Claus
Bigger Brain: Aw, that’s cute, Superman believes in Santa Claus
Glowing Brain: Canonicaly, Superman has met Santa Claus, so of course he wants to make sure his neighbor gets proper credit for his work
Cosmic Brain: Superman believes in Santa because he believes in everyone
I mean Superman himself is an alien and constantly combats foes who use magic and unexplainable technology, a man who dresses in red and gives presents to children all around the world isn’t the most outlandish thing for him to just except
Heck, he *knows* a man in red who could feasibly deliver presents all over the world provided someone supplies the presents.
Mooncustafer 