A joke from back in the day when people needed a paper ticket to board an airplane ...
A porter loaded down with suitcases followed the couple to the airline check-in counter.
As they approached the line, the husband glanced at the pile of luggage and said to the wife, "Why didn't you bring the piano, too?"
"Are you trying to be funny?" she replied.
"No, I really wish you had," he sighed. "I left the tickets on it."