take a flying leap of a galloping goose

simply, this phrase is a "nice" way to tell someone to take a flying fuck to a rolling donut, take a flying fuck, go fuck yourself, get lost, kiss off, go suck an egg, go fly a kite, etc.

Schoolyard bully: Gimme a quarter, chump!

Other kid: Take a flying leap of a galloping goose!

by I Saw U2 Live Twice June 5, 2007