When asked about his highlight of the past year, Karl describes an insect that ate a crumb from his biscuit. Stephen recounts the embarrassment of buying condoms and reads from Karl's Diary.

Ricky, Stephen, and Karl ponder the problem of overzealous sports fans; Karl shares his salivavolume test.

Karl interprets the meaning of wartime sayings and imagines a scenario in which he is the wife of a GI.

Ricky, Stephen, and Karl discuss the laws of society and civil rights.

Karl contemplates the beginnings of the Universe, evolution, recycling, and toilets abroad. 

Karl shares his thoughts on medical advancements, how being sick makes him feel better, and his idea for a machine that would allow doctors to feel their patients' pain.

Ricky, Stephen and Karl discuss capital punishment, the Ten Commandments and hostage negotiation.

Ricky, Stephen and Karl take turns describing the quintessential Englishman, and Karl explains why, if he could be any nationality other than English, he'd choose to be Italian.

After Karl insists that he is really a happy-go-lucky guy at heart, spending most of his time home alone on DIY projects, Ricky and Stephen ask him to take them through a typical day. 

Ricky suggests they play "Room 102", a take on George Orwell's Room 101 from "1984", and asks Karl what he would banish to Room 102 forever. 

Karl explains why he would have liked to join the Army and recounts his most harrowing acts of bravery.

After Stephen recalls being the only kid in his school to dress in a costume for Comic Relief Day, Karl shares his idea that there should be one, and only one, charitable cause per year.

Ricky, Stephen and Karl discuss Karl's theory on how museums procure items. Also, Karl pitches his new idea for a film about a man whose brain is transplanted into Tom Cruise's body.