Ken is passing the time as a pavement artist and brings home a paving slab with one of his paintings on it. When a well-dressed man in a Rolls-Royce arrives at the house, Wolfie assumes he is a council official, there to complain and launches into a tirade but soon changes his tune when the man turns out to be an art dealer prepared to pay £500 for the slab. Unfortunately Wolfie has put it in the potting shed from where Dad has taken it and broken it up to be part of his crazy paving. (thetvdb.com)