Dad's bought a piano, and the world's most sarcastic piano tuner comes round to tune it. Meanwhile, the family spot Aunty Val having an affair. What should they do?

Mum's all excited - she's just had the downstairs carpet cleaned - "Boys - what do you think?" she asks. "Well, it's definitely a carpet" replies a disinterested Jonny. There's a shoes-off policy in the house.

Meanwhile, Dad's bought a new piano, and is waiting for the piano tuner to come round to tune it. The piano tuner has an unfortunate name - Mr Greencock - which the boys obviously find funny.

Mr Greencock is blind and has a guide dog. To mum's horror, he instantly treads mud into he lovely clean carpet. Mum doesn't have the heart to tell him to take his shoes off, and soon her carpet is ruined. On top of this, the blind Mr Greencock is quite simply the world's most sarcastic man. ("I'm sorry I'm late. My car wouldn't start" he announces).

Mum is not prepared to have the carpet in the living room destroyed, so while Mr Greencock goes to the toilet, she forces dad and the boys to wheel the piano out and into the kitchen. "What a normal place to put a piano" says Adam.

Later, the family go out for a meal, leaving the awful Mr Greencock alone in the house. At the restaurant, they spot Aunty Val having a romantic dinner with a man who is not Larry, her husband. When Val sees that she's been spotted, she bursts into tears. Yes, Aunty Val is having an affair.

Val turns up later at the Goodman's house, in tears. "What have I done to Larry?" she moans. But when her angry husband, Larry arrives, demanding answers from Val, all hell breaks out in the Goodman household. With Mr Greencock on hand with his sarcastic comments, a livid, jealous man on the rampage, and Jim, mysteriously in the bath, how will mum, dad and the boys control the situation?