LOL

Two medical students were walking along the street when they spied an old man
walking rather stiff-legged with his feet wide apart. He was walking quite
slowly, and one of the students said to his friend, "I'm sure the poor old
man has Petry Syndrome. Those people walk just like that."

The other student said, "No, I don't think that's right. I believe he has
Zovitzki Syndrome. He walks so slowly and with his legs wide apart, just
like we learned in class."

Since they couldn't agree they decided to ask the old man himself. They
approached him and the first student said to him, "We're Med. Students and
we couldn't help but notice the way you've been walking. We can't agree on
the nature of your illness. Would you mind telling us what it is?"

The old man paused, stroked his chin, and replied, "OK, I'll tell you, but
only after you two bright young Medical Students tell me YOUR diagnosis."

The first student said, "I think it's Petry Syndrome."

The old man looked thoughtful and said, "So you thought, but you were
wrong."

The second student smiled and said, "I concluded you have Zovitzki
Syndrome."

The old man glanced at him and said, "Ah, so you thought, but you too are
wrong."

So they asked him, "Well, Old Timer, what DO you have?"

The Old Man said ruefully, "I thought it was gas...but I was wrong too."