What's happening? Idioms: Chase rainbows martin 17 June, 2013 Example sentence: "I know you want to become a famous footballer but don't chase rainbows! It is very hard and you are just not good enough." Kaplan International Colleges Click the link for the full Weather Idioms illustration! author: martin (317 Posts) Share this with your friends author: martin (317 Posts) View the discussion thread.