Whose turn is it to wash the dishes? Why can't you just wash the dishes you use? Ain't nobody got time to clean out that microwave that looks like either a Jackson Pollock poster or some sort of dirty protest. The frustration of keeping a working rota of who has to wash the dirty coffee cups is something that plagues every workplace. Microwaves are a no go and fights often break out over who will take out the bins. If you don't complain, it's likely to be you.