A man got on the bus with both of his front pockets full of golf balls and sat down next to a beautiful blonde. 

The puzzled blonde kept looking at him and his bulging pockets.
Finally, after many such glances from her, he said, ' It's golf balls ' ...

Nevertheless, the blonde continued to look at him for a very long time, deeply thinking about what he had said. After several minutes, not being able to contain her curiosity any longer, she asked;