I notice some jokes, especially on Facebook etc., where the punchline is far too early and it feels like they're obnoxiously drilling the joke home. It's also the same when you have someone make a reference in a comment thread, then the next person continues the reference with less subtlety.
> They say humour is based on creating expectations and solving them suddenly.
I don't know what it means to solve expectations; I'd guess it means to meet them, but I've always understood part of the recipe for humour to be violating expectations.