There was a mohel that collected all the foreskins from the circumcisions he'd done. I'm talking hundreds over the years if not thousands. And he keeps them all in a jar.
So the day of his retirement he goes to a tailor and he says I want you to make me something out of all these foreskins. The Tailor says no problem come back in a couple of days I'll have something for you.
Couple of days later the mohel comes back and the guys got a wallet made for him.
A WALLET? The mohel says. I must have given you thousands of foreskins and all you have for me is a wallet???
And the Tailor says just relax if you rub it for a couple of minutes it turns into a suitcase.