Told by a Texas cattle owner

 A young bull and an old bull were grazing on new spring grass, when they spot a small herd of cows, maybe 20, at the bottom of the hill. The young bull studies the cows for a bit and then says to the old bull, "Why don't we run down the hill and **** a couple of them?"

The old bull chews on his grass and says, "Why don't we walk down the hill and **** all of them?"