  The lifespan of a taste bud is three days. So is the life span of a fly. A man once discovered the dark secret of a fly. It was so simple, when his friends asked how, he answered, "All I did was ask kindly, 'Fly, will you tell me your dark secret? " "Fly, will you tell me your dark secret..." The fly answered him with a question, "Oh, how do you know if I have a dark secret? " "Well, everyone has at least one," whispered the man, to make it easier for the fly to listen to him.
"Well, you are a dirty man," said the fly. "You have dark secrets. That's why you think everyone has them. Not everyone has a secret like mine. " The man was intrigued. Flies love it when they can intrigue people.
They are more likely to share their secrets that way. The fly sang a song for the man, and this is how he made it known. It had a whimsical tune that flowed forth and never seemed to pause for thought. It went like this: "Have you ever have you ever wanted to be have you ever wanted to be a fly on the wall well let me tell you if you've ever wanted let me tell you there's something you should never know a fly is just--" The fly paused. His two wings buzzed for a fourth of a second, and he turned his body clockwise. "This is my song," he said.
"I know," whispered the man. His lips curled slightly in amusement, but his brows were furrowed. "It's a very good song. Why don't you go on? " "I can't," said the fly, nervously, "I ran out of rhymes. " "It's okay," said the man, and if he could have nudged the fly, he would have, "You sing the song the way you want to, and I'll pretend the words are rhyming.
It's a very nice song. " The fly hesitated for a moment, rubbing its front legs together and turning another half-circle. Then, it began to sing again, this time with more concentration: "Let me tell you, I can tell you one little tiny thing If you want to know a secret grow you a little wing If you wish that you had been a fly on the wall one day there's a chance that you just might listen to what I say Flies are not made for bugging For spreading disease Flying around your picnics Buzzing around your knees Flies are made for hearing Listen! You should not know this! If you ever wanted to be a fly on the wall..." "EEW! " A shriek was heard above.
Suddenly the fly was cut short by a woman whose shoe seemed to have been misplaced: Instead of on her foot, it was in her hand. The man, who had been leaned forward, listening intently to the fly's eager little song, was enraged. He jumped up and snatched the shoe from the woman, slapping her hard on the top of her head (for he was taller then her). This caused many people to stop everything they were doing and turn around to the man. In this situation, there is only one decent thing to do, and he did it: he ran as fast and as far away as he possibly could. When at last he had traveled a considerable distance from them, he doubled over and heaved several deep breaths.
In case you have not managed to understand the secret of flies at this point, I will tell you: One kind of fly carries a human soul, and can appear in the one place and the one time that this should desires most to be in, to hear the one thing, and witness the one event that he feels must be learned by one other person. The other kind of fly tries to find people who would like to become flies on walls. The fly in this story was the latter kind of fly, but he failed at convincing the man to become a fly, for the man witnessed the worst kind of fate for a fly -- One that occurs all to often. Now, I ask you, do you think this is true? Yet, if you were to suppose it were true, it wouldn't matter at all whether it was true or not. It would all be like breathing into the wind.
Anyway, that is my story about the man who learned the secret of all flies. He told his friends, and they did not believe him. This was a foolish of him as it was for the fly to sit in plain view of women with shoes, and surprising too, for a man so skilled at drawing the secrets from mysterious creatures. 
