A suspicious husband hired a private eye to check on the movements of his wife. In addition to a written report, the husband wanted a video of his wife's activities.
A week later, the detective returned with a film. They sat down together and proceeded to watch it.
Although the quality was less than professional, the man saw his wife meeting another man! He saw the two of them strolling arm in arm and laughing in the park. He saw them enjoying themselves at an outdoor cafe. He saw them dancing in a dimly lit nightclub. He saw them take part in a dozen activities with utter glee.
"I just can't believe this," said the distraught husband.
"What's not to believe?" the detective said. "It's right up there on the screen!"
"I simply can't believe my wife could be so much fun!" the husband replied.