The Pan Seller

There once was a man who sold nothing but pans.
Big or small, he'd give it all
to people who asked and paid him in cash.
Most of his buyers, of course, were chefs
who fried and sauteed and made crème brûlée.
But once, a surgeon went to him
and after a while, they shook on a deal.
The very next day, the surgeon came back
and the man simply gave him a drill.
When I asked the man, he only said,
"Why, he asked me for a trepan!
Isn't that just another pan?"