The Anniversary Present
When the show started, he was delighted to find out it was one of those newfangled 3D things. While the movie didn't have any car chases or explosions, he was impressed by how lifelike it all seemed and how everything seemed to move back and forth in front of him. He told his wife that as they were walking back to their car.
She looked at him strangely. "Darling," she said, "we were watching a play. I think it's time to get you new glasses again".