Joining John Lloyd and Sarah Millican this week are mathematician Hannah Fry, Horrible Histories resident historian Greg Jenner, and the tattyfilarious Ken Dodd.

Greg Jenner, a historian who worked as the advisor and "tyrannical pedant" to Horrible Histories, and author of A Million Years in a Day: Stone Age to Phone Age, donates to the museum the 18th Amendment to the US Constitution, the act that brought in the prohibition of alcohol in America, as a warning as to how it is seemingly impossible to ban drink (even if in Jenner's case you are tea-total).

Hannah Fry a lecture in the mathematics of cities at the Centre for Advanced Spatial Analysis at UCL, who believes maths could used for things such as dating people, provides The Museum of Curiosity the equation for the perfect marriage, an actual mathematical forumla that can predict if you marriage will be successful 90% of the time.

Ken Dodd, veteran comedian who performs at seven titters per minute, and holder of the 34th best-selling single of all time with "Tears", offers the museum William Shakespeare's chucklemuscle, because everyone has one according to Ken, and everyone should use them to make the world laugh. Dodd also recounts his role as Malvolio in Twelfth Night.