The relevant clip from the last episode of QI.<p><a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=ipFIxrsYSxs#t=3m40s" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=ipFIxrsYSxs#t=3m40s</a>