I definitely see some humourous situations happening as a result of the physics system. Image how hilarious it would be if a powerful dark hostile Thaumaturge were to charge you with deathly intent only to trip on a chair and fall off a cliff to his death.
As for the writing, I expect witty banter or sarcasm but no puns or forced jokes. We haven't really heard how the dialogue will be handled in the game, so I'm really curious how you'll be able to converse with NPCs.