"if you want something to be done right, do it yourself"
bosses and employees are one example where one people asks another to do something. then in the long run, one will get mad that the thing that they've asked, the other people to do, was not right. but the above statement does not apply to that. you have to really do what your boss's tells you. and even if you're right, you're wrong. ☺.
in cases where there are no bosses and/or employees.. these things still happens. and i cant stand the fact that the one asking the favor is still the one getting all heated up. its just not right. its like you only asked for a helping hand. not a worker. people like these should have a mindset of appreciating those people who tries and helps them and thinking that they are not doing the job alone and you guys know the rest :)