Absurdism is a thing wholly unrelated to non-sequitur humour. “… and a man called Kierkegaard who just sat in the conversation pit biting the heads off of whippets …”
This was actually part of a practical joke. The whole idea is to put some peer pressure on someone and try to get him to pretend he “gets” an unfunny joke and make him laugh at a joke the teller KNOWS makes no sense.
When my friend’s middle daughter was around 3, she’d get caught up in the knock knock jokes we were telling and she’d start making up and telling us “Tingle Tingle” (a bell ringing) jokes. They pretty much went the way of the sample in the first post in this thread, but we laughed for her.