A lion was drinking water from a brook. It was a hot summer day. At the same time, a lamb was also taking water from the downstream of the same brook. The lion saw the lamb and wanted to devour him. As a result, he was about how to accomplish his evil design.
At last, he hit upon a plan. The lion accused that the lamb was disturbing him by mudding water. But the lamb tried to refute the accusation that he was taking wafer from downstream. So the question of mudding water on his part did not arise.
On the contrary, the lamb replied that it was the lion who was mudding water for him (lamb) as he was drinking water from upstream. Then the lion retorted that perhaps his father was mudding water for him in the last year. Saying this, the lion attacked the lamb and killed him.
Moral of the story: ‘Any excuse is good enough for a wicked for a wicked person.’