A fly is sitting on a branch above a pond.

At the same time a fish is swimming in the pond looking up at 
the fly thinking "If that fly falls 4 inches I can jump up out 
and catch it and have me a good lunch."

At the same time a bear is sitting in the woods watching the 
fish watching the fly thinking "If that fly falls 4 inches 
and the fish jumps up out of the water to catch it I can catch 
it and have me a good lunch."

At the same time a hunter is watching the bear thinking "If 
that fly falls 4 inches, and the fish jumps out of the water, 
and the bear goes for the fish, I can shoot the bear and have 
me a good lunch."

At the same time a mouse is watching a cheese sandwich in the 
hunter's back pocket, which is about to fall out, thinking "If 
that fly falls 4 inches, and the fish jumps out of the water 
to catch it, and the bear goes for the fish, and the hunter 
shoots the bear, the sandwich will fall out of his pocket and I 
can get it and have me a good lunch."

At the same time a cat is watching the mouse, thinking "If that 
fly falls 4 inches, and the fish jumps out of the water to catch 
it, and the bear goes for the fish, and the hunter shoots the bear, 
and the cheese sandwich falls out of his pocket, and the mouse gets 
the cheese sandwich, I can pounce on the mouse and have me a good 
lunch."

Just at that moment, the fly falls 4 inches.  The fish jumps up to 
catch the fly, the bear catches the fish, the hunter shoots the bear, 
the cheese sandwich falls out of his pocket, the mouse runs to get 
the sandwich, and the cat jumps for the mouse but misses completely 
and lands in the pond.


The moral of the story is this:  
Every time a fly falls 4 inches, a pussy gets wet.