QI answers all the tough questions

QI is known for asking the questions few know the answer to.

Now the programme has solved a riddle on everyone's tongue: 'Can Susan Calman fit in a post box?'

The comedian often shares her boast of how, at 4ft 10in, she is short enough to be able to stand bold upright in a black cab. But how will she fare with this challenge.

QI elves just posted the clip on to YouTube, although the episode actually aired in February:

Published: 27 May 2019