A male patient is lying in bed in the hospital,wearing an oxygen mask over his mouth and nose, still heavily sedated from a difficult four hour, surgical procedure.  A young student nurse appears to give him a partial sponge bath. 
 
Nurse', he mumbles, frombehind the mask 'Are my testicles black?' 
 
Embarrassed, the young nurse replies 'I don't know,
Sir. I'm only here to wash your upper body and feet.'
He struggles to ask again, 'Nurse, are my testicles black?' 
 
Concerned that he may elevate his vitals from worry about his testicles, she overcomes her embarrassment and sheepishly pulls back the covers.  She raises his gown, holds his penis in one hand and his testicles in the other, lifting and moving them
around gently.  Then, she takes a close look and says, 'There's
nothing wrong with them, Sir!' 
 
The man pulls off his oxygen mask, smiles at her and says very
slowly, "Thank you very much; that was absolutely wonderful, but please listen to me very, very closely....... 
 
     " A r e - m y - t e s t - r e s u l t s - b a c k ?   "