Two Scots playing golf

Two Scots, Rabby and Angus are playing golf and come upon a water hole.

Rabby tees up and hits it into the middle of the pond.

He reaches into his bag to find that he is out of balls.

He then asks Angus for a ball and proceeds to hit it into the pond as well.

This goes on for 3 or 4 more times and when he asks Angus for yet another ball, Angus says."Rabby, these balls cost me a pretty penny."

Rabby replies "Och, Angus if you cannot afford to play the game, you should not be out here."