The chav pilots are saved from a firing squad by Biffy's mother who tells them not to sh*t her about; Cheery children's TV presenters make an apology to their viewers after drinking on a night out made them act in a "silly way"; The White Devil, a self-important ex-pat in Africa, roams the back roads and sets the record straight.

Things get rather confusing when actors suffer accidents while reconstructing an accident - where there's blame there's a claim; Dennis Lincoln-Park visits a library to hold an ancient, priceless manuscript, with disastrous consequences.

We learn about the origins of hairdressing from Neanderthals; Brabbins and Fyffe, the filthy alter-egos of Flanders and Swann, sing a jolly little song about women.

A first date starts to go wrong when stalker-like tendencies come to the surface; and a bored teacher performs some special moves at the back of the school gym while the children work on, oblivious.

The two street-talking chav pilots are back discussing their self-esteem issues and a recent letter from home; Dennis Lincoln-Park, an accident-prone culture buff, examines an absolutely priceless Rembrandt drawing a little too close with his magnifying glass.

Contestants on a new series The Critical Factor are pushed to their very limits; Jilted Jim makes some new friends in Hawaii, despite his wife not being there - she ran off with the wedding DJ; Dr Tia continues saving lives and marveling at the dignity of "these people" in Botswana.

A reasonable boss interrupts his employee's terrorist interrogation with an invitation to Pizza Express for a birthday treat; Divorced Dad is back with his teenage son, with graphic details of his sex life with his new girlfriend.

And when a rather suave guy buys a drink for a beautiful woman at a bar, the evening deteriorates dramatically when she catches sight of his pony-tail.

Howard The Weirdo takes things one step too far in a team ice-breaking session.

Meanwhile, the Second World War pilots are vexed that people have been talking about them behind their backs; Dennis Lincoln-Park examines the only surviving panel of a rare tapestry; and the divorced dad offers his teenage son tips on avoiding STDs.

Terry Devlin, the Ulsterman Royal Correspondent, talks assuredly about the minutiae of the Royal Family's lives; Jilted Jim invites his new best friends to a game of "Travel Boggle"; and, when a woman picks out a "South Harbour Club Patrol" branded T-shirt for her boyfriend, he's bewildered to find himself roped into dealing with approaching Somali pirates.

Sketches in this episode include the busy CEO learning from his assistants that lions can't swim and there's actually no pepper in Dr Pepper; the origins of the dinner party are revealed as Neanderthals sit down to a spot of mammoth and mugs of blood; the Second World War pilots aren't pleased to be roped into digging the escape tunnel - the dirt is bad for their asthma and definitely against health and safety; Jilted Jim continues to cause havoc in Hawaii by letting slip that Phil said men cheating was inevitable; and an undercover operation is ruined when a reasonable boss turns up to tell his employees that working past 5pm isn't acceptable and to get themselves home.

Dr Tia in Botswana reveals he isn't looking to change the culture of a continent, but just wants to earn the people's reverence.

We also discover the origins of job interviews when a new caveman wants to join the tribe; the Second World War pilots eye up two 'buff' women in uniform; Dr Dennis Lincoln-Park is in the Dutch university town of Leighton with a rare and precious tulip; Weird Howard joins in on stag-do stories and relays a practical joke he played on a friend involving potassium hydrochloride from a Russian website; and Jilted Jim pops up from the bottom of the Jacuzzi, where he's been for four minutes trying to starve his brain of oxygen in a desperate attempt to forget the memory of his wife's fling.

A group of workers are also about to tap into the terrorist firewall when their boss comes up with a solution and introduces a masseur for "wellness in the workplace".