Green’s Dictionary of Slang

antipodean adj.

[the Antipodes are ‘the world turned upside down’]

in a mess, chaotic.

[UK] ‘A Medley’ in Rump Poems and Songs (1662) I 324: Some say the World is but a Cheat, / Troth we see’t / For the feet / Still rebell against the Head, / When Antipodean Rulers sway, / Who’el obey?