from his book, one of his things is to intentionally lose the audience then bring it back
he also changes little details constantly eg. one object in a list will change every night just to see what happens
and, more obviously, he always includes local details which he can change from venue to venue. he said that’s a reason he’s done ok in Glasgow - too many English comedians don’t make the effort
his whole thing is satirising stand up and destroying it
(oh look it’s me being exactly the kind of wanker he mocks in the show)