I think stewart lee managed it with his 2006 show "90s Comedian," mainly for the last 30 minutes. The subject matter is pretty nasty, I'm not going to reprint i

I think stewart lee managed it with his 2006 show "90s Comedian," mainly for the last 30 minutes. The subject matter is pretty nasty, I'm not going to reprint it here for fear of bringing up peoples breakfasts, but the reason it was shocking was because there's no punchline. He doesn't even look like he's enjoying himself, he just slogs through this half hour of stomach churning material, with no payoff at all. It's genuinely difficult to deal with, even if the subject matter doesn't "offend" you. Lee can sometimes be annoying and pretentious, but that show is a masterclass in "shock" humor in a way that the likes of Boyle et al can't or won't do. Johnny Vegas is good at it too. There's still a thick layer of irony covering it all though. I think the only way you could make truly shocking art now would be to cut your own throat live on stage or something.