A young man saw an elderly couple sitting down to lunch at a fast food joint. They had ordered one meal. The old man carefully divided the meal in half.
The old man then began to eat, and his wife sat watching, with her hands folded in her lap.
The young man decided to ask if they would allow him to buy another meal for them so that they didn't have to split theirs.
The old gentleman said, "Oh, no. We've been married 50 years, and everything has always been shared, 50/50."
"But why isn't she eating?" the young man asked.
"It's his turn with the teeth," the old man's wife told him.