What is a vast majority to you?

Are there words or phrases that bug you when you hear them used?  I don’t mean expressions like, “like,” “you know,” “so anyway…,” or any other patter that occurs during casual communications.  No, I’m talking about vague terminology and euphemisims used so often in the media and by the government that it makes one wonder if all of them are totally unaware of how annoying that is to the vast majority of people.

Take vast majority for instance. What percent constitutes a vast majority?  I tried to find out by Googling the exact phrase, “vast majority” and examining some of the 18.6 million results.