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muck-up day
noun
Australian
slang
the last day of school before the annual examinations, marked by practical jokes and other student pranks
Words nearby muck-up day
muck bar
,
muck in
,
muck up
,
muck-a-muck
,
muck-up
,
muck-up day
,
muckamuck
,
mucker
,
mucking
,
muckland
,
muckle