A Jewish circumcision doctor once had a jar full of the skin he had circumcised over the last few hours. He went to a new leatherworker he had heard about that could use the leftover skin. So the Jewish doctor thought he would try and reuse, reduce, and recycle.
The doctor met with the leatherworker and told him he had this skin and wanted to have something created for it. The leatherworker says,
"Of course, of course. Give me a few days and come Monday."
The doctor leaves and returns the following Monday.
"Hello again my friend, I'm here to receive my package" says the doctor,
"Here you are" says the leatherworker with a smile about his craftsmanship. He hands the doctor a wallet made of foreskin.
"WHAT IS THIS?" Says the doctor, " I gave you an entire jar of foreskin!"
The leatherworker looks at him and says "Wait, wait, just rub it a bit and it will turn into a suitcase."