The phrase "short pier" is used to suggest that someone should go away or leave because they are not wanted or needed. It means they should go quickly, just like on a pier that is too short to walk on. Full definition
i like to take long walks off short piers, laughter is the best medicine.and i believe a well dressed man can have it all. (blackmillionairesingles.com)
This is ALL that matters and whoever does nt like it can take a flying leap off a short pier. (religion.blogs.cnn.com)
Please, for the sake of all of us — take a long walk off of a short pier. (religion.blogs.cnn.com)