David Mitchell is joined by Rhod Gilbert, Richard Osman, Lucy Beaumont and John Finnemore as they lie on the subjects of octopuses, planes, armadillos and socks.

The Truths

Richard Osman - The Octopus

- The correct plural of "octopus" is "octopodes", although "octopuses" is also used. Found by John.

- The male octopodes testicles are in the head. So are the stomach, heart, kidneys, ink sack, brain and anus. Found by John.

- Some octopodes use the spines of Portuguese man o' war as weapons and the halves of coconuts as shields. Found by John.

- An octopus can unscrew the lid off a jar. Found by Rhod.

- Octopodes have been known to eat themselves. They have been observed eating their own arms, most likely as a result of a neurological disorder. Successfully smuggled.

John Finnemore - Aeroplanes

- The Wright Brothers ran a bike shop before inventing the plane. Found by Richard.

- When the Wright Brothers argued, half-way through they would swap arguments by swapping each-others viewpoint to get construct the right answer. Found by Lucy.

- Lilian Bland built the first plane in Northern Ireland using a whisky bottle as a petrol tank and her aunt's ear trumpet to feed it. The plane was called the "Mayfly". Found by Richard.

- One rejected aeroplane design had 9 wings and 8 engines. It crashed on its first and only flight in 1921. Found by Richard.

- In 1930, Elsworth W. Bunce became the first man to milk a cow on a plane. Successfully smuggled.

Lucy Beaumont - Armadillos

- Armadillo shells have been used to make Peruvian mandolins, but this is now no longer the practice. Found by Rhod.

- If a male armadillo was scaled up to the size of a human it would have a four-foot long penis. Found by John.

- The screaming hairy armadillo spend so much of its time in a deep sleep that that not even being hit with a broom will wake it up. Found by Richard.

- The pink fairy armadillo looks like a furry prawn. Successfully smuggled.

- A third of all Americans who get leprosy catch it from armadillos. Successfully smuggled.

Rhod Gilbert - Socks

- People who wear socks in bed and having warmer feet have better sex. Found by John.

- Socks have been made out of cobwebs in the 17th by a Frenchman. Found by John.

- The Russian for "socks" is "nosóks". Found by John.

- The Ancient Greek word for "socks" was "sickos". They were only worn by women, so it was certain a Greek actor would get a laugh if he wore them on stage. Successfully smuggled.

- The word "sock" comes from the Latin "sockus", which comes from "sickos". Successfully smuggled.

Scores

- John Finnemore: 7 points
- Richard Osman: 1 point
- Lucy Beaumont: -1 point
- Rhod Gilbert: -2 points