Brook sent me this one.

A man got on the bus with both of his front trouser pockets full of golf balls and
sat down next to an uninformed voter. The puzzled uninformed voter kept looking
at him and his bulging pockets. Finally, after many glances from her, he said,
“It’s golf balls.”

The uninformed voter continued to look at him for a very long time, thinking
deeply about what he had said. After several minutes, not being able to contain
her curiosity any longer, she asked, “Does it hurt as much as tennis elbow?”