A dentist was about to do surgery on a patient. She seemed to be very nervous, so he decided to crack a little joke.

"Do you know how latex gloves are made?"

The patient shakes her head.

"People with different hand sizes stick their hands in latex and peel them off to get latex gloves."

The patient didn't even crack a smile. 5 minutes later in the middle of the surgery, the patient just bursts out laughing.

"Did you finally get the joke?" the doctor asks.

"No," she says. "I was picturing how condumns were made.