I watched as he approached an old homeless man sitting near us.
"Hey Jim," he said, holding up a $5 and a $1 bill in each hand, "Which do you want?"
The old man instantly pointed to the $1 bill and Tom handed it over.
"He does it every time," he whispered, grinning broadly, and walked on.
I was curious, so I asked the old man, "Why don't you take the $5? You gotta know it's worth more, right?"
"Of course," he replied, tucking the bill in to his pocket, "but if I took the $5, he would have stopped giving me money years ago."
Funny homeless man joke picture