It isn't dry humor at all. It's more of a stagnant humor.
Quite frankly, it's a very simple-minded show, and most people are pretty simple-minded , so i guess that's where the appeal to the masses comes from.
I, personally don't find it funny at all. It gets old really fast. Every so often it'll have a kinda funny moment, but for the most part it's
Person 1: I just did something
Person 2: I am making a terrible attempt at a joke
Punchline: Awkward silence
It's terrible. I've only seen the American "The Office", so I'm basing my judgement solely on that. I just can't stand it.