The brains behind Teflon must have thought they were in for another good few years. The famous product that ensures the food doesn’t stick to frying pans has also become shorthand for that veneer of untouchability displayed by gifted politicians everywhere. Over the years we’ve had Teflon Bill (Clinton), Teflon Tony (Blair), and, most recently, of course, four years of Teflon Don(ald), a politician so immune to the sticky stuff that he once claimed he “could stand in the middle of Fifth Avenue and shoot somebody and I wouldn’t lose any voters”.