Two medicine students were sitting on a bench when they saw an old man walking along the road.
The man seemed to have some sort of disability because he had his legs unusually close together and when we walked he dragged one foot along the road.
The medicine students, taught to come to conclusions by observation, took notice of this.
One student said to the other, "I think that man has suffered some sort of injury to his lower back and knees. That's why he's walking unusually."
The other one replied, "No I don't think so. Can you remember that lecture the other day? This is a pretty common birth defect"
"But can you see the way he's dragging one foot along the..."
"There's no point of us arguing. Let's go and ask the man"
The students managed to get to the old man and because he was moving very slowly it wasn't hard.
One of the students said to the man, "Excuse us, sir. We're so sorry if we disturbed you. We're medicine students so couldn't help but notice the difficulty you have with walking. I analyzed the way you walk and concluded that this is a birth defect."
The other student said, "And I think you have suffered some sort of injury much later in life. Which of us is correct?"
The man sighed and said, "Just like you too even I had come to a conclusion but it looks like we're all wrong."
Surprised at this one student asked, "Sorry sir, we do not understand can you please elaborate?"
The old man replied...
"You thought it was a birth defect, you thought it was an injury and I thought it was just a fart!"
Mornin