What's happening? Idioms: Pipe down martin 31 May, 2013 Example sentence: "Why are you being so noisy when people are trying to concentrate? Pipe down!" Embed this illustration on your Site: Kaplan International Colleges Click the link for the full Shhh! Idioms illustration! author: martin (317 Posts) Share this with your friends author: martin (317 Posts) View the discussion thread.