I have no idea what it is with medical types and giving their patients weird/slightly macabre things.

Cool story, me:
When I was sixteen, I had my three (fourth one wasn't there, had never formed according to x-rays) wisdom teeth extracted. When I came around to sort-of coherency, the oral surgeon's nurse was pushing this little bundle of tinfoil into my hand.

"That's your teeth," she said.

... Why would I want my teeth? IDGI.