Jokes with false premises always struck me as bad humor. It's like Jerry Seinfeld getting up there and being like "the problem with coffee is that there's always just a litttttle hint of banana flavor. No matter what you do! Always the banana! I mean, is the guy making my coffee some sort of orangutan??"

Irreverent humour is often premised on not being literally true. You may not like that people find it amusing, but many certainly do. That Seinfeld example is a totally different type of humour.