Although divorced five years previously, the couple had remained friends for the sake of their daughter.

One day, the ex-wife learns that her ex-husband has been taken ill and will have to stay in bed for at least two weeks.

Because he’s on his own, she decides to go round to see if there’s any way she can help and she volunteers to take over from the nurse who has been popping in for an hour each day.

The ex-wife learns to give him his medicines, cook his food and generally look after him.

One day, she’s giving him a bed bath when she notices he has a huge erection. “Oh my goodness,” she remarks. “Look, John, he still remembers me.”