laughs

 The son is packing all his things for his holiday in Croatia. He has his hat on so that he does not forget it. He is nervous and cranky, then he needs new lens cover. The lens he has for his camera has an enormous front element, surpisingly enough, for it is a cheap zoom lens. Search through all the spare lens caps, there is none to fit.

Suggest that he uses a plastic bag.

He frantically gets his things together,

Then he comes upstairs to say goodbye. Give him a parting hug and watch him walk down the street with his suitcase.

Upstairs again, use the computer to find information on several things that had caused worry in the house.

Spend a lot of time trying to sort the stupid questions and the silly answers out. Then hear the sons speedin up the stairs. He has forgotten something!. Go down to his room, he says that he has forgotten a few books.

Go downstairs, and speak to the tenant. She would like somebody to check her post box whilst she is away to make sure that it does not get too full. She will be away on holidays for ten days. 

There is the sound of the son running down the stairs,  the door bursts open, he stammers something, and then he runs down the street dragging his case behind him. He always said that he was slow in sports.

But wearing a hat  and a rucksack, and dragging a case behind him, running to catch a bus, he is very, very, fast.

The tenant is amazed, she says that she has never seen him run at such speed. Explain the whole story to her and she laughs.