Woman in a Coma

Ok, so there's this woman in a hospital in a coma.  He nurse notices
after a few days that every time she sponge bathes the woman around
her crotch, her vital signs, according to the nearby monitor, increase
significantly.  The nurse gets the bright idea that oral sex might
just provide the stimulus to bring the woman out of her coma.  She
calls the woman's husband, tells him her idea about oral sex, and he
agrees.  When he arrives at the hospital, the nurse ushers him into
the room, closes the curtain around the bed, and closes the door.
Five minutes later, the man comes running out of the room screaming
that all of his wife's vital signs have plummeted to zero and she
needs  a doctor immediately.  The nurse, upset that her idea had not
only not worked, but seemed to be threatening the life of the woman
she had sought to save, asked the man what had happened.  He said "I'm
not sure, but I think she choked".