Just donât speak with your mouth open ... Photograph: Reza Estakhrian/Getty Images (posed by model) Just donât speak with your mouth open ... Photograph: Reza Estakhrian/Getty Images (posed by model) Thu 29 Jul 2021 03.00 EDT Five years ago, I appeared on a now-defunct Radio 4 panel show called Itâs Not What You Know. The idea was that a friend you nominated answered certain questions about you. It was then your job to guess what answer they had given. It was all blameless fun until I was asked to guess what my friend John had given as my most unpleasant habit. I got nowhere near what John had said, as I had absolutely no idea that I did what he said I did. His answer, broadcast on Radio 4, was as follows: âSometimes, when he eats, bits of food fly out of his mouth.â I was mortified, which did at least elicit a decent roar of laughter from the audience.