As some people promise that they will catch a star for you and never do that, you can catch your star and after that, you can bravely say that you are a star. If somebody would take this trait from you, then you say to this person loud EW, to show how you despise a person who acts like this. You can also use this word to express disgust or distaste from anything that you find unattractive. VSCO Girl cursor with green Star and big pink Ew.