One day he saw a rabbit hop out from a nearby bush. The rabbit, seeing the farmer ran in fear, hit a tree and immediately died.
The farmer was happy; he got a free dinner and didn't have to work.
The next day the farmer went farming as usual, but he didn't work the way he did before. He often looked over to that same bush and tree waiting to see another rabbit.
At the end of the day, no rabbits.
The next day the farmer decided to quit farming completely and focus on waiting for more rabbits.
So every day the farmer laid by that tree, resting and waiting for rabbits.
In the end the farmer never got another a rabbit. Instead he got a deserted farm with no crops.