Watch a video or old programme on YouTube or Vimeo and chances are you’ll start reading the comments underneath. It can be enriching, but more often downright annoying, as comments full of vile invective fill the screen. One person who’s taken a stand against internet trolls is David Baddiel. He hasn’t followed standard advice – to not get involved – as he sees them as akin to hecklers at a comedy show. So he answers them, tries to reason with them and the exchanges that follow, the strange, surreal online paths he’s led down, are the framework for his new show, Trolls: Not the Dolls: a comedy journey into culture’s most dank virtual underground. He’s at Cambridge Corn Exchange on 5 February, with tickets at £30.