'This is no life,' the first rower said, 'we get paid shit, the food is bad and my back is broken.'
'Why do we do it anyway?' the second rower said.
So they went to the captain.
'Well, I don't know either why you do it,' the captain answered, 'I'm not keeping you here, am I? You are free to leave.'
So they happily jumped overboard, crying: 'We are free! We are free!' and the ship continued its course.
The next day, the sharks were feasting on their dead bodies.