A fly on the river (bit lengthy, bit racy)

First post here. This is the only joke I know...bear with me as its a bit lengthy.

There was a fly buzzing along a river near the shore, exactly 3 inches above the water. It was preparing to descend onto the surface of the river when a fish happened to notice it. The fish thinks to itself, "when this fly drops 3 inches to the surface of the water, I'm going to jump out and eat the fly." Now, unbeknownst to the fish was a bear sitting under the trees on the riverbank. The bear also notices and fly as well as the fish and thinks to himself, "when this fly drops 3 inches, the fish is going to come to the surface of the water and I'm going to grab it." The next character in our story is a hunter who is sitting a bit further back in the woods from the water. The hunter too sees all this unfolds and says to himself, "when the fly drops, the fish will surface, and the bear will step out in the open to get the fish. that's when ill make my move and shoot the bear." Now the hunter, he happens to be eating a cheese sandwich. We'll say its cheddar cheese. In a nearby bush is a mouse who also sees all of this unfolding. The mouse concludes that when the hunter attempts to shoot the bear, he must drop his cheese sandwich to do so. Thus the mouse thinks,"when the hunter drops the cheese sandwich, I'll scurry out and grab it!" And finally the last participant in our story is a cat who is crouching gracefully high in a tree above all of this. The cat thinks,"when the fly drops 3 inches, the fish will come to the surface, the bear will step out to the get the fish, the hunter will shoot the bear, the mouse will run to grab the cheese sandwich, and I will pounce on the mouse!" All of this happens in an instance - The fly drops 3 inches, the fish eats the fly, the bear grabs the fish, the hunter drops the cheese sandwich and shoots the bear, the mouse grabs the cheese sandwich, BUT the cat pounces completely missing the mouse and lands SPLASH in the river. What is the moral of this story?

[When the fly drops 3 inches, the pussy gets wet.](/spoiler)