ho-ho-phobia is a phobia most obvious around Chirstmas time. the actual fear is not of Santa Clause but just of his big white beard. From around November onwards, many fearful reports are recieved claiming the sight of a large white beard.
person 1: "dude, whats up with him... all i wanted was a photo with santa!"
person 2: "oh he has ho-ho-phobia"
person 1: "oh right, he doesnt want to go anywhere near that big white beard"