The boys come home to find the house in a real state. The builders have been in, and everywhere they look, there's mess.
On top of this, there's a mouse in the house, and mum is hiding in the shed. Dad - who's clueless in the kitchen - is left in charge of dinner ('I might as well be boiling a table').
But when Jim (Mark Heap) pops round to see if he can help around the house, something quite terrible happens to him, and mum is forced - out of guilt - to ask Jim over for dinner.
This is Jim's happiest moment ever - finally, his first ever Friday night dinner with the Goodmans. Dad and the boys are livid with mum for asking him round.
What follows is an excruciating dinner scene; along with Jim's peculiar eating habits ('I prefer to tear my food'), Jim's conversation skills have a lot to be desired ('Martin, are you circumcised?' he asks an unsuspecting dad).
Things get even worse very quickly, as Jim leaves a trail of destruction in the house.