A man enters the pro shop and, scanning like a HP Laser-Jet, looks  around frowning.

Finally the pro asks him what he wants.

"I can't find any green golf balls," he replies.

The pro looks all over the shop, through all the catalogs, and finally calls the manufacturers. Sure enough, he determines that there are no green  golf balls.

As the man walks out the door in disgust, the pro asks him, "Before  you go, could you tell me why you want green golf balls?"

"Well, obviously! Because they'd be so much easier to find in the sand traps!!"