At the theatre

A theatre usher was alarmed to see an elderly man crawling on his hands and knees beneath a row of auditorium seats in the middle of a serious dramatic play.

“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:

“My false teeth are in that gum.”