"THAT bill's a counterfeit." by jeff rose

This guy got on the other day and put a dollar bill in the fare box. The fare
box started
beeping which surprised him (and me- I've never heard it beep like that!) I
looked at him,
shook my head, pointed at the farebox, and said, "THAT bill's a counterfeit."
He looked at
me blankly (and somewhat nervously) and after a pause I told him, "I'm kidding-
I have no
idea why it beeped like that." And I smiled. We both had a little laugh over
that one!