Cinderella is sitting at home, missing the Ball, when Fairy Godmother appears. With a wave of her wand she exclaims
"You shall go to the Ball, but remember to leave by midnight or your fanny will turn into a pumpkin!"
So Cinders goes to the Ball, and meets a handsome prince with whom she dances all night.
Just before midnight she remembers Fairy Godmother's warning, and says to him "Alas, I must go, but first may I know your name?"
"Peter, Peter, Pumpkin Eater" he replies
"Actually, I'm not in any rush, I could stay a bit longer"