On a train, you overhear a woman phoning her office. Why has she phoned?

Woman:  Jenny, hi, it’s me. I’m on the train and it’s stuck somewhere just outside the station -- signalling problems or something ...Yes, I know, sorry, but there’s nothing I can do about it. Anyway, listen, could you check my diary and see when I’m supposed to be with those marketing people ... it’s on my desk  ...... Oh, isn’t it? Oh, that’s strange. And it’s not in the drawer? I wonder ... Oh, I know, I must have left it in Jimmie’s office after yesterday’s meeting. You couldn’t get it and then ring me back, could you? Sorry to be a nuisance.

Man:   Eggs are delicious food and parents have to make sure they are laid in spots well hidden from hungry thieves. One such careful parent braves the rushing waters of the Iguacu Waterfalls in South America to lay its eggs in a damp crack in the rock face behind the falling water. Accidents are frequent, but evidently the risk is considered worthwhile. In any case, there are no eggs on the menu in this particular part of South America, which is bad news for some!