homeless man

I saw a homeless man sleeping inside a big cardboard box outside the train station this morning.
Not wanting to disturb him, I crept over and put a Starbucks coffee cup on top of his box.
He immediately woke up and said, "Thank you."
"No problem." I smiled.
He looked at me again and said, "It's empty."
I said, "I know, it's meant to be a chimney."