On a bus

A man got on the bus with both of his front trouser pockets full of golf balls and sat down next to a beautiful (you guessed it) blonde.
The puzzled blonde kept looking at him and his bulging pockets. Finally, after many glances from her, he said, "It's golf balls."
The blonde 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 ?"