Take A Long Walk On A Short Pier Meaning

(idiomatic, pejorative, colloquial) Used to tell someone to go away, or that their request will not be met.

Example: 1952, Hospitals: the journal of the American Hospital Association, volume 26, page 40:
  Well, it was a busy day and I was really cut down to size — in fact, once I was told to take a long walk on a short pier.
2001, Tad Crawford, The Money Mentor: A Tale of Finding Financial Freedom, page 183:
  She smiled, but she wasn't the same Tina who had told her banker dad to take a long walk on a short pier.