Jack’s wife went along to the optician’s for her annual checkup.
“Right,” said the optician. “Can you read the bottom line?”
After a few moments she shook her head.
“OK, try the next line.”
Again she shook her head. This went on until they got to the
largest letter at the top but she still shook her head. By this
time the optician was so frustrated he unzipped his trousers,
pulled out his willy and shouted, “Well, can you see this?”
“Oh yes,” she replied.
“Now I know what the trouble is,” he said. “You’re cockeyed.”