I have come to the conclusion that the worst saying in the English language is "it's all good". It is NOT all good, the saying is obnoxious and stupid. It is not all good - there is a lot of bad in there too. And what is good for one person is not good for another person. And if it is good, there is always a way to screw things up. And if it is bad, things can always look up or they can look worse - so to lump everything together and just cover up all the icky stuff and the irritating stuff and try to lighten the mood by saying "it's all good" is actually counterproductive and really aggrieving. And when something is not going right and someone throws that out there - it makes me want to punch them.
What sayings annoy you? What drives you crazy? What things really get you mad?