fanny pad
a soft absorbent pad (with or without wings) used to soak up period blood therefore stopping clots dropping out of the knickers when windsurfing or performing a gymnastic display for the whole of your school,also prevents a girl from sticking to the floor when doing the splits for her father
when sarah was abseiling down the woolworth building a sudden stretch caused her 'fanny pad' to slip out and fall hundreds of feet to land on the face of the traffic warden