It's a prank maybe to get pickled (5)

I believe the answer is:

caper

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'it's a prank' is the definition.
('caper' can be a synonym of 'prank')

I don't understand the remainder of the clue.

(Other definitions for caper that I've seen before include "Frolic, prank" , "game" , "Cooked and pickled flower bud" , "prickly shrub" , "Pickled bud - escapade" .)

I've seen this clue in The Globe and Mail.

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