"Obsession" joke

A middle-aged man 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."

"Oranges," said the doctor.

"Breasts," replied the patient.

"Apples."

"Breasts."

"Watermelons."

"Breasts."

"Wipers."

"Breasts," said the patient with the same reply.

"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!"