As soon as he brings him home, the young rooster rushes out into the barnyard and screws all 150 of the farmer's hens. The farmer is impressed.
At lunchtime, the young rooster again goes out into the barnyard and screws all 150 hens. The farmer is not just impressed anymore, he is worried.
Next morning, not only is the rooster screwing the hens but he is screwing the turkeys, the ducks and even a cow.
Late in the afternoon the farmer looks out into the barnyard and sees the rooster lying on the ground stretched out, limp as a rag with his eyes closed.
The farmer runs out and sees that there already are vultures circling around over the rooster. He looks down at the young rooster's limp body and says: "You deserved it, you horny bastard!"
But the young rooster opens one eye, points up at the vultures with his wing, and says, "Shhhh, they're going to land soon."