Crossword Genius

Crazy place for a flag? (2,3,4)

Ross

I believe the answer is:

up the pole

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'crazy' is the definition.
(I've seen this before)

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for up the pole that I've seen before include "Slightly mad - on the wrong track" , "Unstable" , "Wacky" , "Maybe trying to repair telephone line" , "as climbers could well be" .)

I've seen this clue in the Sydney Morning Herald.
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