Hospital (nasty)

Two old people, a man and a woman, walk into a hospital.

The doctor says to the old man,

"I'll need a urine sample, a feces sample, and a blood sample."

The old man says, "What?" So the doctor says it again.

Once again the old man says, "what?"

So the doctor yells it,

"I NEED A URINE SAMPLE, A FECES SAMPLE, AND A BLOOD SAMPLE!"

With that the old woman turns to the old man and says,

"He needs a pair of your underwear!"