XX - Waking the dead?

Three nurses go into the morgue, and there's a
Dead man's body lying there, with an erection. The first
nurse sees it, and says "I'm dying for it," gets atop the man and has
her way with it.
The second nurse says "Aye, so am I, shame to let
it go to waste", and she does the same. They turn to the
3rd nurse and ask her if she is having a go. She replies she is having her
period, and declines.
One of the nurses replies, "He's dead anyway, he won't be
bothered."
The last nurse agrees with this, gets on and does
her thing too. Just after she finishes, the dead man
sits up. The nurses asks him " We thought you were dead ! " The man
replies, " After two jump starts and a blood transfusion, you wouldn't be
dead either !"