Stand-up comedy has undergone a huge transformation over the last 20 years. Shappi Khorsandi, one of our best loved comedians, reflects that, “It’s really changed. It’s got cleaner and more sober and a lot more career-minded. You meet 20-year-olds on the comedy circuit now who have a five-year plan.” “I’m sure stand-up is something career advisers at top private schools are telling their students to do. ‘You don’t want to go into the money markets or the law. You want…