"Gosh," he thought, "if that fly goes down three inches...and that fish leaps for it...
that bear will expose himself and grab for the fish. I'll shoot the bear and then have a proper lunch."
You probably think this is enough activity for one bank of a lake, but can tell you there was more. A wee mouse by the hunter's foot was thinking, "Gosh... if that fly goes down three inches... and that fish jumps for that fly...and that bear grabs for that fish... the dumb hunter will shoot the bear and drop his cheese sandwich."
A cat lurking in the bushes took in this scene and thought, as was fashionable to do on the banks of this particular lake around lunchtime, "Gosh... if that fly goes down three inches...and that fish jumps for that fly... and that bear grabs for that fish...and that hunter shoots that bear... and that mouse makes off with the cheese sandwich...then I can have mouse for lunch."
The poor fly is finally so hot and so dry that he heads down for the cooling mist of the water...
The fish swallows the fly...
The bear grabs the fish...
The hunter shoots the bear...
The mouse grabs the cheese sandwich... The cat jumps for the mouse...
The mouse ducks...
The cat falls into the water and drowns.
Not a hilarious joke, but worthy of a grin, however, I feel there are many ways that this can be interpreted. For me it shows... that no matter how much you may plan for something to go one specific way you should have a plan 'B' otherwise you may find yourself drowning or worst...
Whatever floats your boat. I didn't find much funny in this, but I suppose the ending was nearly worth a grin. Nearly.