You haven't done your washing in a while. All the fabulous lacy numbers, all the nifty little matching sets that go with your best bras, all the plain black knickers that really fit you are in the laundry basket.

It's time for the emergency knickers: the ones that sit at the back of the drawer, lost and unloved; the ones with sagging elastic, faded colours, maybe even a couple of holes. They are the ones you didn't throw out when you lost or gained weight. They are guaranteed passion-killers.

They are the ones that you pray you are not wearing when you are run over by an ambulance, or when you get lucky.

It's up to you: want to get caught with emergency knickers on, or with no knickers on?