A man is lying in bed in the hospital with an oxygen mask over his mouth. A young nurse comes round to take his temperature
"Nurse", he mumbles from behind the mask, are my testicles black?"
Embarrassed, the young nurse replies, "I don't know, I'm only here to take your temperature
He struggles again to ask, nurse, are my testicles black?"
Finally, she pulls back the covers, raises his gown, holds his penis in one hand and his testicles in her other hand and takes a close look, and say's, "there's nothing wrong with them. They look just fine."
Finally, the man pulls off his oxygen mask and replies," that was really very nice but, are... my... test... results... back