3 nurses go into the morgue, and there's a dead man's bodylying 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 towaste", 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 bloodtransfusion, you wouldn't be dead either!"