“What are you doing sir?” He whispered. “You’re disturbing the audience around you.”
“I’ve lost my gum,” answered the old man, continuing to search under the seats.
“Sir,” continued the usher. “If that’s your only problem, allow me to offer you another stick of gum. So that you can sit down and watch the rest of the play. A stick of gum is not worth all this commotion.”
“But you don’t understand,” said the old man.
Spoiler:

