go fly a kite

go fly a kite  {v. phr.},  {slang}

To go away; leave. Usually used as a command, to show that you do not accept someone's ideas.

Harry was tired of John's advice and told him to go fly a kite.

After Mary stood around telling Sue what was wrong with her dress. Sue told her to go fly a kite.

Compare:

DROP DEAD,

GO JUMP IN THE LAKE.