[colins_pride]

he says that if he is prepared to chase one sheep round the field for 45 minutes or so

Your friend must not be a programmer. If he were a programmer, methinks he would just get a sheepdog, and save the 45 minutes.

[radu_floricica]

Of course, he would also maintain the dog for two hours a day...

[DTrejo]

No wonder some programmers have fitness problems

[gaius]

He's waiting for a compile :-)