Homeless Adviser: They feed on our change. They need it in order to keep them moving.
Homeless Person: Is that... is that some spare change?
Homeless Adviser: Somehow they're able to take... our change... and turn it into nourishment, sustenance.
Homeless Person: Spare some of that change, sir?
Homeless Adviser: But now watch. (Drops some coins into the hobo's cup and walks back to the boys. The hobo rattles his cup a bit.)
Homeless Person: Spare some change?
Homeless Adviser: It has already completely forgotten that I've given it change. It just wants... more, change.