By forcing air through their spiracles, or the holes through which they breathe, males generate a hiss that
lady cockroaches apparently find
quite fetching: in lab experiments, muted males were almost never
successful at mating.
Given that most relationships are either becoming highly
successful (
quite a low per cent) or are just crumbling into bits, the companionship of the young man and older
lady is a gust of fresh air in the society.