Breast Fetishism!
Santa had an obsession with women's breasts. So he went to a psychologist and told the doctor about his problem.
"I am going to do word association," explained the doctor. "I am going to say a word, and you will say the first thing that come to your mind."
"OK Doctor," replied Santa.
Doctor, "Oranges".
"Breasts," replied Santa.
"Apples"
"Breasts"
"Watermelons"
"Breasts"
"Wipers"
"Breasts," said Santa.
"Wait a minute! I can see the connections between oranges, apples, watermelons and breasts. But automobile's wipers? Where is the connection?" asked the doctor.
"Easy, one on the left and one on the right!"