A young nurse is watching an operation for the first time. "Excuse me, please," she asks the doctor. "But what are you doing?"
"This woman swallowed a golf ball," he replies. "And we're trying to remove it from her throat."
Noticing a worried looking woman seated outside, the nurse then asks, "And is she the patient's mother?"
"Actually," the doctor replies. "That's her golfing partner and she's waiting to finish the game."