Having attention drawn to themself makes them panic. Wolfgang would rather be invisible. From their own point of view, they're a mess. Their clothes are threadbare, but clean; one thing they always miss outside of shelters is free laundry. A couple quarters is a lot of money when you make maybe 20 dollars a day. Their hair is like that, too, for that matter: clean, but not in as good repair as Wolfgang would like.
“Um, nothing,” they demure, which is patently untrue but Wolfgang could be sitting in the middle of a burning building and when the fire department came bursting in still be all, 'no, no, this is fine.'
They put their change back in their pocket. Maybe they'll find a vending machine somewhere.