Karl ruminates on museum collections, his invention for a mug coaster, and a new movie pitch.

Karl feels he's getting up in age and is starting to spend more time with his doctors. No longer young and free, he thinks about his will, which he believes is a form of charity, though Ricky disagrees. Karl's attorney suggested he marry his girlfriend for tax purposes, which would finally give his parents a reason to meet hers.

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

Ricky, Stephen and Karl discuss what things Karl would banish from the world, and what item he would take if stranded on an island.

Karl walks Ricky and Stephen through a typical day in his life. After being woken by his girlfriend Suzanne going off to work, he mulls about, taking his breakfast while sitting on the bed as he listens to the radio.

Ricky, Stephen and Karl discuss the essence of Englishness, and what other nationality Karl would like to be.

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

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.

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

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

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

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

Karl ruminates on the insect world; Stephen recalls the horrors of buying condoms.