jiggery-pokery
Pronunciation: /ˌjigərē ˈpōkərē/
noun
informal , chiefly British
Deceitful or dishonest behavior.
Origin
late 19th century: probably a variant of Scots joukery-pawkery, from jouk 'dodge, skulk', of unknown origin.
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The jig is up. Your days playing poker with us are over because of your routine jiggery-pokery. Besides, you drink all our beer and never bring any to the games.